Archives December 28, 2022

Premium acrylic solid surface sheets wholesale provider? KingKonree acrylic solid surface has proved to be a remarkably durable material that also can be easily renewed to original appearance. It cannot delaminate and stands up well to daily wear and tear. It can resists most of the impacts, cracks and cuts that occur in heavy traffic areas. KingKonree acrylic solid surface is a non-porous material, it is solid through its entire thickness and can be fabricated with seamless-joint, make its surface hygienic. This feature don’t allow the growth of bacteria or fungi, as a hygienic solid surface material, it had been tested by an independent laboratory SGS according to ASTM G 21-15 Standard Practice Synthetic Polymeric Materials to Fungi. See even more information at https://www.kingkonree.com/solid-surface.

Touch and Feel: Solid surface is not stone-cold, like concrete, quartz, and granite. It is smooth and “warm” and provides a forgiving hardness; when a glass is tipped over, it may not break. However, when dropped from a distance, glass will likely break. Outdoor Applications: The lighter colors of solid surface show very little weather or UV impact after many years in outdoor applications such as signs, outdoor benches, and cladding for buildings. An added benefit of the material is that graffiti can be removed without changing the appearance of the surface.

KKR, as one of the most experienced solid surface manufacturers in China, provides all kinds of solid surface bathroom countertop for customers. We utilize all kinds of advanced technology to make the product be of superior performance. Being processed by the skilled surface polishing technology, the product has a smoother and softer surface. There is no porous or splicing trace on the product, allowing the product to be easy to clean and maintain. With our exclusively developed anti-yellowing technology, the product is manufactured with the performance of keeping high color fastness to perspiration on the surface. Thanks to our independent R&D ability, the product is popular for its fashionable and high-end design. Additionally, our advanced machinery like CNC machine, infrared cutting machine, casting machine, hole-cutting machine, and trimming machine ensures the accurate dimension of each product. We ensure the thickness tolerance of one slab is strictly controlled within 0.5mm. The product has passed CE, CUPC, and SGS certificates and has the advantages of stain resistance, high temperature resistance, and anti-fungal performance. KKP provides over 300 colors of the solid surface bathroom countertop for customers and can also customize the color as requested. We can also supply the products with different thickness ranging from 6mm to 30mm.

Good feedback of “New Design, High Quality, Professional Service” from professional purchasers coming from 107 countries. With high-quality carton, foam, and wooden box packaging materials to protect the products in an all-round way and minimize damage; our bulk goods are made of wooden pallets with cardboard, which is safe, structured, and convenient. Kingkonree is a general manufacturer in China, which is a world’s leading company in solid surface/stone resin baths and kitchen. Enter KKR website, you’ll immediately be attracted by the market hot sale design. The company’s innovative and high quality products on offer are 100% made for the high quality standard export destinations. They, with smooth look and feel, are high cost-performance ratio, dirty resistant, highly pure, radiation-free, crack-free, and not fast-yellowing.

The solid surface is made of a compact, non-porous, and environmentally-friendly materials based on aluminum and ISO resin polyester acrylic. The product, therefore, is made to be anti-pollution, anti-bacterial, and 100% healthy. The acrylic solid surface product is smooth and nonporous. As a result, they will not promote the growth of mold, mildew or bacteria. Thanks to the anti-soaking performance of the materials, the product has the advantages of nearly zero water absorption. KKR provides a 10-year warranty period for the solid surface basin. Different sizes of the product can be customized.

Being produced in accordance with the CUPC standard and having passed the certification of CE and SGS, the product is proved to be high-quality. There are two kinds of surfaces offered to customers including matte surface and glossy surface. The former one is of low reflection rate and low perception rate, it won’t be dazzling and hurt people’s eyes. The latter is clear and bright, which can attract people’s eyes. The solid surface is made of a compact, non-porous, and environmentally-friendly materials based on aluminum and ISO resin polyester acrylic. The product, therefore, is made to be anti-pollution, anti-bacterial, and 100% healthy. The acrylic solid surface product is smooth and nonporous. As a result, they will not promote the growth of mold, mildew or bacteria. Thanks to the anti-soaking performance of the materials, the product has the advantages of nearly zero water absorption.

KingKonree is a solid surface manufacturer in Guangdong, China. We have been focused on the solid surface sheet, sanitary ware, kitchen worktops and related fabrications since 2000. We have our own in-house full line advanced machines, such as homothermal machine, automatic pouring machine, and CNC cutting machine. Our experienced masters are strict with every production process: e.g. material preparation, vacuumization, thickness control and polishing. Our QC will spot check and fully inspect every batch of product we made. In this way, our customer can get the best quality products, and we can be far away from customer complaint. You will receive the anti-fungal bathtub, the easy-to-clean kitchen sink, and the anti-yellowing worktops. KKR always aims at customer’s satisfaction. We treasure the business reputation in the past 21 years and also will fight for it in the future. Discover more information at https://www.kingkonree.com/. With rich experience in engineering projects, we make it possible for customers to enjoy customized services. This means that your ideas and drawings could be realized by opening a new mold, or alternatively by fabrication.

Skilled and experienced workers are proficient in the operation of precise tools and equipment to ensure the product made perfectly. The selected packaging materials reach the Europe E0 standard. Provide professional package, loading, and unloading. The overall process covers QC before producing, on-line producing, after producing and loading. Full inspection is available.

Quality UPS and gel battery supplier in China? UPS battery is a professional lead-acid battery used in backup power supply, also called VRLA battery. because the battery needs AGM separator, some customers call AGM battery. Products include 2V, 4V, 6V, 12V four series more than 1,000 capacity models, capacity from 0.5ah to 3000 AH. UPS batteries are widely used in uninterruptible power supply, fire emergency system, DC screen, backup power supply, electric toys, electric tools, electronic scales, electric rolling doors, solar street lamps, solar energy storage power station systems, aerial platform applications, golf cart, etc. See extra information on ups battery manufacturers.

In addition to the lead acid battery, ZULE battery factory also produces gel batteries, Lead crystal batteries, front terminal batteries, solar batteries, ups batteries, caravan batteries, golf cart batteries, and OPZV&OPZS batteries.We customize and produce the batteries that customers need according to their requirements! We produce batteries with the best A-grade positive and negative plates, AGM gel separators and the thickest shell, and produce batteries with sufficient capacity to customers, so as to ensure that every penny gets the goods and meet customers’ requirements. We can also design your brand packaging, shells of different colors, different capacities and weights according to your requirements to meet your OEM needs.

Backup power supply is a system equipment that connects the storage battery (mostly lead-acid maintenance-free storage battery) with the main engine and converts direct current into mains electricity through module circuits such as the main engine inverter. Simply put, if there is a power failure, the storage battery in the backup power supply will supply power to the load immediately. When the mains supply is normal, the backup power supply will provide power protection for the load and output stable and pure mains supply. Widely used in: factories, hospitals, storage equipment, large servers, data centers, computing centers, (military) accusation centers, control centers of large factories, aerospace and its control centers, and all other non-interruptible operations scenarios.

ZULE battery has a professional R&D department to provide ODM & OEM service for our customers. Most time, customers will ask for their logo on AGM batteries and cartons. We will design the battery printing content and carton content of the customer brand according to the customer’s requirements. Some customers will customize different battery case colors, for example, red, orange, blue, black, green, etc., as well as the printed contents of gel batteries, some of which are directly printed with ink, and the ink can also be customized with red, black, green, blue, etc. You can also make colored stickers and attach them directly to lead-acid batteries.

Remove the comb plate and give the welded pole set to the next process First check the pole group for excess lead slag, repair it if there is any, and put the welded pole group into the battery box. Check to see if there is any excess lead slag, and then solder up every single cell of the 2V pole group to become 12V. We want to ensure that the upper and lower battery covers must be tightly closed and sealed, so you need to adjust the teaching cover a little until it fits. See additional details at https://www.fsjuli.net/.

Vehicle ignition coil supplier 2023? Principle of the ignition coil: It is composed of the main coil, a secondary coil, a magnetic core, a switching transistor and other auxiliary components. The main coil is charged by a battery, and the secondary coil is discharged by a spark plug to ignite, and the triode is responsible for switching. The charging time is controlled by the battery voltage and the engine speed to ensure that the energy is consistent each time. The ignition coil has two types: 3-wire and 4-wire. The 3-wire is the power supply positive, negative, switch control (ECU command), and the 4-wire has one more ignition detection. Wire can detect whether the spark plug is ignited (whether there is discharge current in the secondary coil). Find extra info on ignition coil manufacturers. Haiyan ignition coil manufacturer has many offices in other countries. One of the larger productive enterprises.

The primary winding of an ignition coil will typically contain 150 to 300 turns of wire; the secondary winding will typically contain 15,000 to 30,000 turns of wire, or around 100 times more than the primary winding. The magnetic field is initially created when the vehicle’s electrical system applies approximately 12 volts to the ignition coil’s primary winding. When a spark is required at a spark plug, the ignition system will switch off the current flow to the primary winding, which will cause the magnetic field to collapse. The collapsing magnetic field will induce a voltage into the primary winding in the region of 200 volts; but the voltage induced into the secondary winding will be approximately 100 times greater, around 20,000 volts.

Using a changing magnetic field to induce an electric current: If a coil of wire is exposed to a magnetic field and the magnetic field then changes (or moves), it creates an electric current in the coil of wire. This process is known as ‘inductance’. This can be demonstrated simply by moving a permanent magnet across a coil. The movement or change in the magnetic field or magnetic flux induces an electric current into the coil wire. There are two main factors that affect how much voltage is induced into the coil: The faster the change (or speed of movement) of the magnetic field and the greater the change in the strength of the magnetic field, the greater the induced voltage. The greater the number of windings in the coil, the greater the induced voltage.

The engine coil is the main product of Haiyan ignition coil wholesale supplier. Haiyan insists on the use of high-quality materials and advanced technology to manufacture car engine coil. Besides, we strictly monitor and control the quality and cost of each auto ignition coil production process. All this guarantees the auto ignition coil to have high quality and favorable price. According to the function, the auto repair tool cabinet can be divided into mobile tool cabinets and wall tool cabinets. Wheels are installed under the mobile tool cabinet for convenient movement. Haiyan wholesale metal tool cabinet is a shelf like a closet. Read additional info on https://www.hj-auto.com/.

Haiyan car ignition coil suppliers have 200 workers, around 170 work over 4 years, with an independent long-term workflow and productivity, have one department including 30 products technology development and research. Our automotive ignition coil manufacturers cover over 14000 square meters, have been awarded city contracts and keeping promises to units, also we certify ISO9001, and TS16949 for a quality system, truly achieving the quality first, reputation first quality service for our customers at home and abroad. Kindly welcome domestic and overseas patrons to come and guide.

Real estate crowdfunding solutions today by crowdbulls.com: Before choosing a real estate crowdfunding platform, always check what licenses specific platforms are holding and what is the scope of those licenses. Most of the platforms disclose their licenses, but not all of the licenses are covering their crowdfunding activities (e.g. there are platforms operating under payment institution license, but this does not cover crowdfunding activities). Before that, each country applied different regulations and licenses, therefore up until now all the platforms operating in EU are operating under different regulatory regimes. The above mentioned Regulation has a transition period, which allows for countries to adopt it in the local legislation as well as for the real estate crowdfunding platforms to get a license under new regulation. See even more info on real estate crowdfunding platforms.

As seminal book “The Crowdfunding Bible” explains, crowdfunding refers to the process of asking the general public to contribute money or startup capital to help fund new ventures. Using this form of online fundraising, in which open calls to potential investors are posted on websites alongside prospective investment opportunities, concepts can be pitched straight to everyday Internet users. These individuals, who contribute to a pool of capital that is collectively sourced from others with similar interests, can provide a means of financial backing for current or prospective real estate investments. Such opportunities can take the form of residential or commercial holdings, and include either the development of new housing, retail, or office space, or partial ownership in a share of existing holdings.

Real estate crowdfunding is one way for retail investors to access assets traditionally reserved for the wealthy. Real estate investment platforms, including crowdfunding sites, pair developers and other real estate professionals with individual investors who want exposure to real estate without the hassles of owning, financing, and managing properties. While real estate crowdfunding is inherently risky, real estate investments can help diversify your portfolio and provide competitive returns.

There are multiple real estate projects which are being offered in various real estate crowdfunding platforms. Projects can contain new residential real estate project developments, residential refurbishment projects, industrial real estate projects and other. Despite the fact the object of funding, each of them have a couple parameters in common. What are these and how to interpret them description is provided below. Real estate crowdfunding project duration: Each project has certain defined project duration for which borrower is borrowing required capital. As real estate crowdfunded capital is relatively expensive, borrowers are aiming to do a quick turnaround of projects and return invested capital relatively soon. Therefore real estate crowdfunding project developers are usually borrowing for months, not for years. Typical duration varies between 6 and 18 months, 12 months being an average. The shorter the loan duration, the more confident is the buyer that he or she can turnaround the project.

Fundrise: Fundrise allows even nonaccredited investors to quickly get started with real estate crowdfunding and start buying into both residential and commercial properties by teaming up with other investors. Any sums that you wish to invest are pooled into REITs, and used to purchase properties, buy land, develop real estate, and otherwise pursue private real estate deals. A simple to use and intuitive website makes the process of online real estate investment approachable. However, be aware that the privately held investments it offers may be highly illiquid and will largely appeal to long-term investors. Noting the speculative nature of these opportunities, any investments should accordingly be subject to due diligence up-front.

Real estate crowdfunding uses social media and the Internet to connect investors to property investments. Real estate crowdfunding is similar to equity investing since an investor can buy into a property and become a shareholder. Crowdfunding offers companies access to capital that they might never be able to raise. Crowdfunding offers investors the ability to become shareholders in a company or in a real estate property. In the past, crowdfunding was most commonly associated with equity transactions, whereby companies would use the process to raise capital. Crowdfunding pools money together so that small and mid-sized could use the funds to invest in the company’s future, such as buying equipment or building a manufacturing plant. Read more information on crowdbulls.com.

What is crowdfunding? Crowdfunding is a capital raising process, during which capital is raised from the public via open process. Public entails both private individuals or institutional investors. Usually, crowdfunding is used when other types of capital raising is not possible due to various factors, e.g., risk profile. There might be some cases, when crowdfunding campaigns are being used as a marketing tool to market the product, service or project itself.

Art and lifestyle of spectacular Norway with Kristin Skjefstad Edibe : The Norwegian culture is rich with traditions and customs that have been passed down through generations. The arts are also important to Norwegians – many people would say that their most famous painter was Edvard Munch who painted “The Scream.” Norway has many museums including the National Gallery in Oslo which houses many famous paintings by artists such as Picasso and Monet. One of Norway’s most famous tourist attractions is the Preikestolen or Pulpit Rock which towers over 1000 feet above Lysefjorden Valley. Read additional details about the subject here : Kristin Skjefstad Edibe.

A popular tourist destination in Norway is the city of Bergen which has a stunning coastline. The food in Norway reflects its history with influences from all over Europe but it is often fish based because of its long coastline. Norway is a country in Northern Europe. It is surrounded by the North Sea on the west and the Norwegian Sea on the north, both parts of the Atlantic Ocean. The country shares a long border with Sweden to the east and Finland to the northeast. Norway has an extensive coastline, facing both North Atlantic and North Pacific oceans. The culture of Norway is a mixture of traditional Nordic culture and British culture that became apparent after Norwegian independence from Denmark in 1814. The traditional folk costume for women is called “bunad”.

The most recognized form of Norwegian art is wood carving, which dates back to at least 1641 when wood carver Hans Olsen created a model for King Christian IV’s new Royal Palace, now known as Christiansborg Palace, in Copenhagen. Norway has many museums with various collections of artifacts that cover topics such as Viking ships, medieval churches, Sami people’s culture and history, art galleries with paintings by famous Norwegian artists. Norway is a country that is well-known for its stunning landscapes, rich culture and people. It is a country of contrasts. The Norwegian culture can be traced back to the Viking era. They are known for their love of the arts, and they have a deep respect for the natural world. Norway has an admirable food culture as well. The traditional Norwegian dishes are hearty and simple in nature, which is what makes them so tasty!

Norway is a country in Northern Europe, on the western coast of the Scandinavian peninsula. It is bordered by Sweden and Finland and has a population of five million people. The culture of Norway is very diverse and it can be related to the fact that Norwegians are descendants from Viking settlers, German merchants, Scottish farmers, English Quakers and Irish Catholics. In this section we will explore the Norwegian culture through their cuisine, traditions and celebrations. Norway is a Scandinavian country in the north of Europe. It is one of the most sparsely populated countries on Earth and has a population of 5.3 million people. The culture of Norway can be defined by its history, traditions, values, and beliefs. The Norwegian culture has been influenced by its long history, which includes the Viking era that lasted until 1050 CE, the union with Denmark under the Kalmar Union from 1397 to 1814 and finally Norway’s independence as a sovereign state in 1814.

Norway is a country in Northern Europe. It is bordered by Sweden, Finland, and Russia. Norway has a population of 5 million people. The capital of Norway is Oslo. The culture of Norway is very similar to that of the other Scandinavian countries like Denmark and Sweden. This means that they are generally open-minded, democratic, and egalitarian people with an emphasis on social welfare and equality for all citizens. Norway is a country in the Northern Europe, with borders to Sweden and Finland. The Norwegian culture is rich in traditions, customs and folklore. The Norwegian culture has been shaped by the country’s history and geography. Norway was once a major power in Europe and the Viking Age left an indelible mark on Norwegian society.

Norway is a country with a rich culture and history. It was the home of the Vikings, who are famous for their explorations and discoveries. The Norwegian people are famous for their love of nature, which they show by spending time in it whenever possible. They have also been known to go on long hikes in the mountains and ski trips to the wintery north. Norway is a country with a very rich culture. Norway is located in Northern Europe. It has the longest coastline in Europe, and it shares borders with Sweden, Finland, and Russia. Norway has a population of 5 million people.

Norway occupies the westernmost point of continental Europe, so it has a long coastline that stretches more than 10,000 kilometres along the North Sea and Norwegian Sea to its west, with only Denmark to its south. Norway is a Scandinavian country that is located in Northern Europe. It has a population of around 5 million people. The country’s capital city is Oslo and the currency used there is Norwegian Krone. Norway has a relatively low population density, with most of its people living in rural areas. The country’s economy relies heavily on the petroleum industry and Norway ranks as one of the top exporters of natural gas in the world. The culture of Norway is deeply rooted in Norse mythology, which can be seen from the many Viking-related monuments and sculptures across the country.

Health specialist swedish massage salons in Incheon? It is a Chinese detoxification massage that treat emotional conditions associated with diseases. It targets body parts, especially the organs affected by any disease to heal and help to recover. Chi Nei Tsang uses old Taoist techniques where the limbs are gently but deeply massaged, resulting in physical, spiritual, and emotional relief. When translated, the phrase “Chi Nei Tsang” means work of the internal organs. The stomach is normally oiled so it feels warm before massaging with the palm. Sometimes the person will feel some pain because the limbs are actually being targeted, but later feel relaxed.

However, this may not be an ideal treatment for chronic low back pain, as determined by one 2019 controlled trial that found massage reduced only the perception of pain. Another 2008 study suggests that Swedish massage may help low back pain only if people also exercise. As with low back pain, Swedish massage may reduce neck pain, but only temporarily. One key finding in a 2016 review found that people were more likely to benefit from this massage if they attended frequent and long sessions, according to the NCCIH.

Increases Flexibility & Range of Motion: Swedish Massage can elongate the muscles, open and lubricate the joints and decrease swelling, all of which can ease movement and increase flexibility. By incorporating stretching techniques, Swedish style massages can also increase a more fluid range of motion. Increases Overall Energy: Increased circulation and decreased stress can lead to a general boost of energy.

Efficacy of business trip massage therapy: Business trip massage therapy has the effect of improving the range of motion and reducing muscle tension related to flexibility improvement through business trip massage. It is known to have high efficacy in joint mobility by improving blood circulation and reducing muscle pain. It also relaxes the muscles around the joint, allowing the joint to move more freely. If the mobility of the joint is reduced, it is easy to strain or injure the joint. When receiving a business trip massage, your muscles can relax and protect your joints from injury.

This energy is said to flow along specific meridians or paths, which are connected to our physical system. The goal of Asian massage is to relax, calm and heal the body through the harmonious release of stress and free-flowing energy. It is important to understand that there is not only one type of Asian massage. Instead, it is an umbrella term used to describe many massage themes originating in China, Japan, and other Asian countries. Many types of Asian massage are used today in therapeutic massage settings. As we await the spring and renewal season, now it is the right time to learn a little more about them.

After shopping the day away in the Gangnam district of Sinsa-dong, soothe your aching shopping arms at Spa Lei. Unlike most Korean spas, Spa Lei is for girls only and goes out of its way to accommodate female guests. The rock sauna, a bed of heated stones that contour to the curves of the body, is particularly relaxing, and the massaging jets of the hot tubs will have you and your gal pals wanting to stay at this sanctuary for the rest of your trip. From a nail salon and powder rooms to an outdoor cafe and small shops selling jewelry and lingerie, Spa Lei brings beauty, fitness, health and fashion together into one package. Find additional information at https://ma4day.com/.

Changdeokgung Palace in Seoul was the principal place of residence for a number of powerful kings and their royal families throughout history. It is one of the best-preserved palaces in South Korea at this moment. However, the Huwon Secret Garden is one of the stars of the property. This huge garden features an incredible array of plants, trees, rivers, lotus ponds, pavilions and sitting areas. Some of the trees on the property are over 300 years old. The garden was granted its name because it had an air of mystery about it; it was a place where no one but the royal families were permitted to enter without permission.

For our Korean guests:

암 증상 완화를 제공할 수 있음: 더 많은 증거가 필요하지만 NCCIH는 초기 연구에 따르면 암에 걸린 사람들이 통증, 피로 및 불안과 같은 증상을 해결하기 위한 보완 요법으로 스웨덴식 마사지를 사용하는 것이 도움이 될 수 있다고 제안합니다. 순환을 개선할 수 있음: 2016년 연구에 따르면 고전적인 마사지는 신체의 순환을 개선할 수 있습니다. 이러한 이유로 일부 전문가는 임신 중 마사지를 권장합니다. 그러나 이 연구는 더 오래되었고 이 이점을 보기 위해서는 더 많은 임상 연구가 필요합니다. 혈전의 병력이 있는 경우에도 주의해야 합니다.

유연성 및 동작 범위 증가: 스웨디시 마사지는 근육을 늘리고, 관절을 열고 윤활하며, 부종을 감소시켜 움직임을 완화하고 유연성을 증가시킬 수 있습니다. 스트레칭 기술을 통합함으로써 스웨덴식 마사지는 또한 보다 유연한 동작 범위를 증가시킬 수 있습니다. 전반적인 에너지 증가: 순환 증가와 스트레스 감소는 전반적인 에너지 증가로 이어질 수 있습니다.

현지인과 관광객 모두에게 인기가있는 Dragon Hill jimjilbang은 실내 및 실외 욕조, 숯 사우나, 수정 소금 방, 인삼 및 삼나무 욕조, 온수 수영장 및 어린 이용 놀이 공간이 마련된 7 층 엑스트라 바간 자입니다. 네일 바, 골프, 영화관, 바비큐 레스토랑이있는 옥상 정원, 한식당 실내 레스토랑, 간식 및 휴식 공간이 많이 있습니다. 읽다 더 세부 이 웹사이트에서 마사지포털.

인사동에있는 한국 전통 목욕탕의 전통 오크 재 사우나에 들어갑니다. 아름답게 꾸며진 한국식 목욕탕에서 마사지, 페이셜, 헤어 스크럽 등을 즐기실 수 있습니다. 무엇보다도, 지갑에 찌그러짐을 일으키지 않습니다! 온수 욕조에서 한국식 가마 사우나 및 마사지 테이블에 이르기까지 편히 쉬십시오. 이 찜질방에서 하루를 보낸 후에는 피부가 좋아 보이는만큼 자유로울 수 있습니다! 건강을 조금이라도 향상 시키거나 친구 나 가족과 어울릴 수있는 차가운 곳을 찾거나 뷰티 트리트먼트를 받으려고한다면 이곳이 좋습니다!

출장마사지 테라피는 또한 나쁜 집중력이나 학업 성취도를 경험하는 사람들에게 이롭습니다. 왜냐하면 그것은 뇌로 가는 혈류를 개선하는 데 도움을 줄 수 있기 때문입니다. 이것은 마사지가 기분을 조절하고 우울증이나 불안과 같은 감정을 조절하는 데 중요한 역할을 하는 세로토닌의 생성을 촉진하기 때문입니다. 스트레스를 받거나 불안할 때 분비되는 호르몬입니다. 마사지는 코르티솔 수치를 약 68% 감소시키는 데 도움을 준다. 혈액 순환을 촉진해 근육에 신선한 혈액과 영양분을 공급하여 적절하게 기능하는 능력을 향상한다.