Kaiyu machinery is a state owned enterprise specialized in the manufacturing of large power, medium and high speed diesel engines of serial 300, LB250, 210, Z170 including more than 130 specifications of marine diesel engines with capacity 220-1618KW, which also power the diesel generating sets with capacity 200-1250KW produced by the same factory. They are widely used in passenger and cargo vessels, freshwater shipping, port tugboats engineering ships, main or auxiliary engines, both marine and land generating sets, various peak regulating power stations and pump station sets, etc. All the products have the characteristics such as rational construction, advanced performance index, reliable running, easy operation and maintenace, etc. With the strong capacity of adaptation and competition. ZDEF has founded a quality-assuring system aiming at the tapping and designing of the products, the purchase of the raw material, cool and hot machining, assembling, testing, storage, packing and transport, delivery and after service and so on. The factory strictly follows the standards of ISO9001-2000 Quality-managing System to organize the maintenance and guarantees the product quality. It is "ZDEF BRAND" products that took the lead in passing the discharge standard of "73/78Antipollution Pact" stipulated by international Martime Committee among the like domestic diesel engines. Besides, the factory obtained honorably an authentication certificate from France ssification Society Factory.