Since 1993, Sunprein Co., Ltd. has grown rapidly as an international manufacturing company of gas springs, dampers and stamped brackets. With its renowned technology, for more than 20 years, the company has supplied gas springs, dampers and other parts to its customers in various industries such as international automobile industries, consumer-electronics industries and many other industrial applications.
All employees at Sunprein are proud of the company’s reputation for high-quality products and strive to achieve outcomes that benefi t all customers at home and abroad.
Under the corporate vision of “To Be Passionate and Innovative,” they always strive for the highest quality of its products, services and customer satisfaction.

Sunprein’s gas springs are applied to vehicles, car seats, doors, furniture and other automotive parts. They come in various sizes and feature force variants and end fi tt ings. They are easy to assemble and have variable locking mechanisms. They are also compact and do not require big space.
The company’s dynamic gas springs are used in vehicles, car seats, doors, fl aps in machinery and automotive parts.They are capable of dynamic compression damping.
Sunprein’s dynamic gas springs are next-generation gas springs for the automotive industry. The company off ers a broad selection of sizes, force variants and end fi tt ings of dynamic gas springs. Variable locking mechanisms make the products more reliable and effi cient.
Its dampers are used in washing machines and furniture.
They are designed for clients’ exacting requirements. They boast high-quality with international standards. They are stabilized in powerful vibrating motion.
Sunprein’s free lock gas springs are applied to swivel chairs, task chairs and stools. They lock into position in extended/compressed positions. Its free lock gas springs are maintenance-free and have long service life. Compact design makes them possible to install in small spaces.
Proving Technological Prowess
Sunprein was founded in August 2003. The Small & Medium Business Administration designated the company as a technologically excellent company. In November 2000, the company received a QS-9000 certifi cate which proved its technological prowess. In February, Sunprein exported gas springs to the USA for the fi rst time. In February 2005, the company opened its technology research center.
In October 2005, Sunprein took home the Presidential Prize as an innovative small company. Sunprein is putt ing its utmost eff orts into developing bett er products and services to satisfy customers at home and abroad. At the same time, the company is actively making forays into overseas markets to grow into a world leader.

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Since its establishment in 1997, Songpo Hightech Co., Ltd. has been manufacturing centrifugal dehydrators, centrifugal separators and centrifugal concentrators that separate, refi ne, dehydrate and concentrate existing sludge at sewage disposal plants, waste water disposal plants, waste from stock raising and food waste disposal plants based on density, components and weight.
Wintech was established in 2002 and began to manufacture window fi lm to fi ll a major gap in the industry. Dealers had no choice but to pay high premiums for quality fi lm since lower-cost alternatives lacked the superior performance that professional installers needed for their work. The company focuses on bringing quality fi lm to the market at a fraction of the cost that industry veterans have become accustomed to. By cutt ing costs at the top at the corporate level without sacrifi cing any funding toward manufacturing and research, the company has been able to consistently deliver highly competitive fi lm at signifi cantly lower prices. The company exports 20% of its products to foreign countries.
currently its products are exported to over 30 countries around the world. In December 2005, the company received the Three Million US Dollar Export Tower award from KITA (Korea International Trade Association) on the occasion of the 42nd Trade Day ceremony.
product has a longer lifespan.
In 2000, C&Oh Corp. was established by experts who had long years of experience in the construction equipment sector. By dedicating itself to the development of highquality products and good back-up service, business has grown rapidly year by year and its products have been distributed in over 20 countries.
Jerim Metal is a manufacturer and exporter of variouskinds of hand saws. It has been 30 years since the company started exporting its goods. Based on accumulated knowhow, Jerim Metal currently exports products to lots of countries in the world including the U.S., Italy, the UK, Canada and Spain. Its main products are fold-away pruning saws, straight pruning saws, curved saws and pole tree saws.
business on August 31, 1998. In spite of the high quality of products made in Korea, their brand-value is less acknowledged and less powerful than those made in Japan.
These coupling joints not only save their users welding costs but also prevent any linear expansion and the defl ection of piping by welding repairs. Thus, in order to achieve the best reputation in this fi eld of piping connections, Youngnam Metal is rendering its best services to its clients and will make steady eff orts to produce bett er products.

This product comes in handy in crowded places with escalators such as department stores, shopping malls, airports, hospitals and subway stations among others.
Its products are supplied locally and worldwide for new and upgrading projects in chemical plants, petrochemical and thermal plants, and oilfi eld and refi nery applications, both onshore and off shore. It is capable of providing timely technical solutions to meet customers’ specifi c applications and needs and will promptly att end to any urgent enquiry.
e static caused by the ball and seat friction are grounded to avoid fi re or explosion. The stem incorporates the blow-out proof design. The stem and body have excellent sealing performance with redundant steam seals and a graphite gasket on the gland plate. They also have cavity relief design and double lock and bleed.
Swivel joints have been optimally designed for ball bearing race. This is considered as high pressure application. It is the best design for high twist stress and optimized heat treatment on ball race. The point contact is designed to reduce friction factor.

