Hebei Sanlu Auto Accessories Factory, incorporated in 1985, with an occupied area of 23000 sq.meter, an covered area of 18000sq.meter,possesses domestically advanced complete sets of equipment production lines of raw material cold draw-processing, product molding, heat treatment, oxidizing, coating, packing, inspection, verification and etc. the product covers four big series, including automobile tyre, bolts, steel plate U-shaped bolt, standard tightly-secured bolts, cartridge, equivalent to ...