Xinxiang Bashan Precision Filter Co., Ltd. (Bashan), affiliated to China Aviation Industry Corporation, is a specialized manufacturer that produces various products such as metal wires, wire cloths, test sieves, filter elements and filters, steel thread inserts, steel reeds, metal sintered fiber, EDM wires, vibration machines, and other related products. We got ISO9001 certificate in 1998. With advanced production equipment, a highly precise testing system and reliable quality assurance system, Bashan is one of the few manufacturers that make products as the Standard-ISO/TC24 in China. Moreover, our company is a leading member drafting national wire cloth industry standard GB5330-85 and aviation standard HB1862-93. Our fittings for "Divine boat five" (launched on 15th October, 2003) worked successfully. We possess a national grade laboratory and national defense hydro-pollution inspection and control center, draft out and set up 37 national military using standards, aviation industry standards and standards for other industries. Main products: High precision wire cloths with nominal aperture sizes: 6.00-0.028mm (3-500mesh/dutch); cloth specifications: 7x40/0.90x0.71-325x2300/0.036x0.025mm and aperture ranges: 315-5um. Test sieves with diameter: 200mm; nominal aperture sizes: 8.00-0.038mm (Sieve Number 5/16-400#), and electroformed sieves with nominal aperture sizes: 500-3um and the allowed deviation 3-1um. Thread inserts: including free run type and screw-locking type with ranges of M2-M45mm. Filter elements and filters: widely used to pneumatic and hydraulic systems, such as chemical fiber, polymer melt, lubricating and fuel oil, oil refining, and oil drilling. The finest precision is 2um. contact: Yali Wang, email: shelleywyl(a)yahoo com cn.</p>