Liaocheng Hongyu Metal Co., Ltd.

HONGYU METAL was founded in 1994 with a long history and experience exporting washers worldwide by own trade company----Qingdao Dukyang Trade Co., Ltd. The materials meet the severe requirements. We use A2, A3, A4 copper. The standards about include DIN125, DIN126, DIN127, DIN7989, NFE ...

Telephone：0086-532-86885653Address：Room A,16F, Tianzhi Mansion, Qingdao Bonded Area , Qingdao economic and Technology developing Area