... mold accessory, kitchen and table ware, art ware, standard part, fastener, fabricated mechanical part, bronze lock, rivet, steel pin and pin.2. Hot ... pin, chain wheel, aluminum wheel, valve, rock arm shaft, semi drive shaft, small shaft and fork.3. Various electric tools, such ... and solid center bit. 2. Welding of various hardware mechanical gadget: Silver soldering and brazing of metals of the same ...