... 0.65mm,0.7mm The main products in our company are double wall coil weld steel tube, single ... oversea,like Midea ,Hisense,LG,Kelon etc famous brand company .We are one of the companies, products are ... "Quality is first , credit is supreme" is our company's objective. Products are produced according to ASTMA254-90 Standard ... attestation system and Certificate of Enviroment Management precision tube