HARBIN YISHENG SCIENCE AND TECHNOLOGY DEVELOPS LTD

HARBIN YISHENG SCIENCE AND TECHNOLOGY DEVELOPS LTD., is a research, development and sintered silicon carbides (pressureless sintering) SIC material products technology-based enterprises. SSIC is produced by pressureless sintering submicron carbide powder. The sintering process results in a Self-bonded, fine grain SiC product which is extremely hard, lightweight and low in porosity. The material can be formed into complex shapes with greater than *8% theoretical density. Our SiC is highly resistant to corrosion, sliding wear, high temperatures and thermal shock. The corrosion resistance of our line of SiC products using our own unique and patented process permits Superior performance in environments of hot gases and liquids including strong acids and bases, even at extremely high temperatures. The results would indicate that by comparison our SiC products would outperform tungsten carbide and aluminum oxide in all chemical categories. The ability of our SiC products to resist corrosion along with its excellent surface finish characteristics makes it ideally suited to applications involving heat exchangers, mechanical seal faces, valves, bearings and other mineral and chemical equipment components. Our company currently has five series of products utilizing our SSiC process: A series of mechanical Seals, sliding bearings Our nozzle series, valve and valve trim, structural These products are used in corrosion resistance, high thermal, high wear Special environments. Our company's products have been widely used in petroleum, chemical, mechanical, metallurgical, power, navigation, water plants and many other fields. Credibility is our Conviction. Service is our goal. Growth together is our sincere aspiration. We are eager to work with you to design and manufacture your needs in the growing area of SSiC. YISHENG NORTH AMERICA, INC. Manager: Kevin J. Munroe **3 Washington Street, Liberty Ville, IOWA ****7, USA Tel: *************0 Email: xxxxx YISHENG HONG KONG, INC. Manager: Kan Lau Units ***3A**5,*8 th Floor, **3 Argyle Street, Mongkok, Kowloon, Hong Kong. Tel: **2 ***2 ***9 Fax: **2 ***3 ***7 Email: xxxxx