Tianjin Winfast Technology Co. , Ltd. is a professional screws manufacturer. Ourscrews are in various shapes, sizes and materials, including steel, stainless steel. Thy can be qualified with international standards, such as DIN, ASTM, IFI, AS and customized 神马影院高清. The screws coating can be made specially according to your requirement. Eg. Phosphate, Mechanical Galvanized, Ruspert, Nickle plated, zinc plated, and colored painting, etc. Meanwhile, we can supply documents related to material procurement and production, as well as various quality certifications (such as CE, BV, SGS, TUV, CCIC, etc. ), and can provide specified certifications as required by customers.