Constant flow pump, plunger pump, friction and wear testing machine, lubricating oil detector, supercritical extraction equipment, fatigue testing machine, balance machine, petroleum product oxidation stability tester, peristaltic pump. The business scope includes technical development, technical consulting, and technical services; Selling chemical products (excluding hazardous chemicals and Class I precursor chemicals), communication equipment, computers, software and auxiliary equipment, electronic products, mechanical equipment, hardware and electrical equipment, and lubricants; Enterprise management consulting; Economic and trade consulting; Computer system services; Computer animation design; Import and export of goods, technology, and agency.