... of watch case, watch flan, handle, mold accessory, kitchen and table ware, art ware, standard part, fastener, fabricated mechanical part, ... mold, mold accessory and inner hole of mold..C. Welding (braze welding, silver soldering and brazing)It mainly aims to melt ... cutter, reamer, planning tool and solid center bit.2. Welding of various hardware mechanical parts: Silver soldering and brazing of ...