Dongguan AOYI hardware Co Ltd. was set up in 01 Apr 2009. We have 45sets of Taiwan advanced heading machine, 10 sets of multi-location cold header, 46 sets of thread rolling machines as well as the lathing,milling,grinding,drilling and other processing auxiliary."AOYI Screw" has enthusiastic customer service team! Careful engineering R & D team! Professional manufacturing technology team! Discerning quality testing team! Advanced quality testing equipment! The main supporting test& measuring instruments are as following: 5 sets of Taiwan optical sorting machines,1 set of plating thickness measuring machine,1 set of Tensile testing machine,2 sets of micro-hardness tester,1 set of rockwell hardness tester, ,2 sets of salt spray test machine, 2 sets of projector, 6 sets of TOHNICHI torque meter ,metallographic analysis,brittleness test machine (including freezing test), the detection head fracture test devices,NHK depth gauge,Chengliang & KKS thread ring gauge, Chengliang & KKS thread plug gauge and ROHS environmental testing equipment,which ensure us to offer the perfect quality products. "AOYI Screw" has obtained the ISO9001, ISO14001, TS16949 automotive industry certification!"AOYI Screw" products comply with ROHS, EU REACH requirements, to provide you products with stable quality is the pursuit of "AOYI families" !