Shanghai Ren Sheng Standardized Item Manufacture Limited Company

our company specializes in producing steel fasteners including different types of bolts, washers, nuts and other related products. The specification scale of our washers covers DIN, USS, SAE, NF, BS, etc and that of our bolts DIN558/601?DIN931/933, A10-5/2. We can produce nonstandard products according to the requests of customers as well. [详细介绍]