- Jbt(Beijing) Rock Tools.,Co.Ltd
- drilling tools, rock drill, button bits, round rods, coupling sleeve.
- Address:Room 6,Four East Anzhuang Building Daxing District Beijing ,China Beijing, Beijing
- Hebei HaoQi Drilling Equipment CO.,Ltd
- trione rock roller bit, PDC bit, drilling tools, hole opener.
- Address:cangzhou city, Hebei province Cangzhou, Hebei