Qingdao Everhigher Industry & Trade Co., Ltd has been long-term specializing in manufacturing and exporting various Bolts, Nuts, Washers , Pins and other Fastenings as per DIN, ISO, ANSI , JIS and GB standard. We can also as per customer's designing pictures and samples with different materials and grades. Material we are using is low carton steel, middle carton steel, alloy steel, stainless steel and coper. Grade can be from G4 until to G10.9. Size range in Dia: M3-380, size range in Length: 4mm-300mm.