Mingda Standard Element Limited Company in Zhejiang Haiyan and it was created in March 1994. For many years, it is producing hexagon flange nuts, hexagon nuts, thin teeth nuts, lock nuts, bolts and nonstandard productions professionally. Our company mainly manufacture standard production of ASNI, DIN, JS, AS, GB, ect, widely used in tool accessory, bicycle accessory autobike accessory, automobile accessary, electric equipment accessary and machine accessary.