Qingdao Cosine Electrical Equipment Co., Ltd. Specicalize in produce metal fitting for ceramic&polymer insulator and line hardwar, which range malleballe iron, ductile iron. Casting-steel and forged-steel. Our main product covers cap, flagne, tongue&clevis, socket&ball. Base, pin cross-arm and horizontal clamp. What`s more, the ductile iron cap can reach 600kn, and forged-steel can meet 750kn.

Cosine electric has 1250 employees, which can supply 200tons/month ductile cast iron and produce 80000 units fitting per month for polymer insulator. We own two foundries. One for dutile cast iron, the other for casting-steel. And have innovative technology forge and hot-DIP galvanization workshop. From casting or forge, hot-DIP galvanization and machine, all have been finished in our plant. So we can control quality in all the process.

Cosine electric began to build plant and produce mellable iron&ductile iron fittiing for ceramic insulator in 1980. with polymer insulator appear and growing, we started to built other plant for producing polymer insulator`s fitting and power- line hardware. About 30 years experience insure us supply stable&good quality products. Meanwhile, we began to export our producuts from 1997. And our products have been marketed to Italy, Sweden, Spain, Germany and Brazil etc, with a good reputation among our customers depending on high-quality products and good service.