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