Shanghai Guan Wei Facilities Company Ltd. has been a professional manufacturer of steel chains for a long history. We have advanced production equipment, complete tests of methods and experienced technical workers. We make popular short, middle, long and circular chains with diameters from 3.2 to 20mm and alloy steel chains graded from 43 to 80. We have also developed carburet chains. Our chains sell well all over the world because of superior quality and good service.