Hejan Ouman PDC Bits Co.,Ltd. is the largest PDC manufacturer in North of China,also the one of the two best PDC bit brands in China.
we are able to produce matrix and steel type,size from 3inch to 26inch,Also can prduce and customize according to all your request or drawings.
Our company is the largest Distributor of CS tricone bit in North of China. CS is one of the only two best brands of tricone bits in China.

Call us +86 317 558 1388 or +86 132 3179 6200 for details.

Hejian Ouman Stand by you. sales@bjomzczb.com