Xian Avisen import and export company limited Established in 2008,We have three production line. manufactures high quality  Liaocheng sihe stainless steel material limited company is a leading expert in the field of stainless steel coiled tube ,stainless steel polishing tube Stainless steel seamless coiled tubing .According Production standards: GB, ASTM, ASME, JIS and EN standard very strictly Steel types: 304/304L, 316L, 321, 317L, 309S, 310S, INCOLOY800