Jiaxing Yongyi Precision Technology Co., Ltd Our company′s main business is the production of various standard screws and non-standard screws. Product List Cylinder Head Torx Screw Coarse Ss 304 Hex Washer Head Self-Drilling Screw 5# Point Pan Head Machine Screw Trox Ss 304 Flat Head Square Drive Wood Screw Type 17 Ss 304 Flat Head Self-Drilling Screw Hex Washer Head Self-Drilling Screw Ss 410 Oval Head Screw with Trox Ss 304