Jinan Yihua Tribology Testing Technology Co.,Ltd. is the first enterprise of technical research in tribology testing and developing testing equipments. Our company is the member unit of National Tribology Institute. The main products include Full-ball series testing machines,Ring-on-block tribo-tester,End-face tribo-tester,reciprocation tribo-tester and non-standard machines of imitating High-speed,High temperature,vacuum etc.working conditions.These machines can evaluated tribological properties of fluid,solid,semi-fluid semi-solid materials,parts,constructions^ That are widely used in petrochemical industry,automobile making,metallurgy,textile,building materials,Light industry,aerospace,scientific institutes...