Hongkong Honngyu Metal Co. , Ltd is a fastener manufacturer in China , Specializiing in manufacturing washers(standard washers, Special washers)and stamping parts. It was founded in 1994 with much experience in exorting washers and stampings to the world by its trade company- Qingdao Dukyang Trade Co. , Ltd.
The standard washers incluude: Flat washers, Square washers, Springwasers, Lock washers, Taper washers and so on, In accordancee with DIN125A, 125B, 126, 433, 440, 1440, 1441, 6916, 7349, 7989- 1, 7989- 2, BS4320A, BS4320B, DIN436, 434, USS, SAE, F/ W, Etc.