... Shanghai Pudong Development Haiyan Haiyan Metal Materials Co., Ltd. is located in the industrial city of ... whole, under the widely Metal Materials Co., Ltd., Zhejiang Import and Export Co., Ltd. deep fat. Is a life- ... In 2006, sales of all types of fasteners in steel of about 350,000 tons, ... ball drawing of Phosphatizing Straightening; standard; fasteners; shaped pieces; screw; nut; bolts; screw; metal ...