Haiyan Guantang Hardware & Machinery Factory (GTHM) specializes in producing nuts, threaded rods, and bolts. We have introduced thirty sets of advanced technical nut manufacturing equipment. Furthermore, our products are manufactured strictly according to the standards of GB (national standard), ISO (international), DIN (Germany), and BS (Britain). Therefore, our products are of high quality and beautifully packing.Our products meet the standard and non-standard fasteners of ISO, DIN, ASTM, ANSI (IFI) and BS, widely used in various industries including construction, electronic and furniture. Our products sell well in America, Canada, England, Germany, Australia and Japan. Moreover, our company has a mature research and development center which provides latest products and can meet customers needs. We adhere to the policy of "human-centered and sincere service" and the quality principle of "making "GTHM" a famous brand by top quality and pursuing better development by clients satisfaction". We warmly welcome customers to cooperate with us for greater success.