bit breaker

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[CN] Hejian Huanyu Petroleum Machinery Co., Ltd. [Manufacturer]
Key Products/Services:
Business Overview: Hejian Huanyu Co. is a professional manufacturer of drill bits, already have nearly 20 years expreience including manufacturer and sells in home and abroad,...

[CN] Hebei Solidkey Petroleum Machinery Co.,LTD. [Manufacturer]
Key Products/Services:
Business Overview: Hebei Solidkey Petroleum Machinery Co., Ltd. is located in the Oil Field Huabei,south of Beijing 200KM.We have set up a perfect marketing and service networ...