Shanghai Guan le ming Co.,Ltd that has more than 60 years history is the largest manufacturer of jewel bearing & shock-absorber of wrist watch in far-east Asia, and is the only one company that can export jewel bearing & shock-absorber in China presently. The main products include jewel bearing, shock-absorber, mini-bearing of wrist watch, jewel bearing of instrument, jewel orifice and all sorts of industry jewel. The capacity of jewel...