Panjin city, Liaoning province, China

CNPC GWDC is leading petroleum drilling service company in China. We provide all kinds of service for the well bore, like drilling rig, drilling fluid, mud logging, directional drilling, wireline logg...

93# of 1st Building,66 Jianshe Road Zhengzhou, Hena

With a registration capital of 500,000RMB, Henan He Hui Abrasives & Tools Sales Co., Ltd. was founded in 2013. It is a technological enterprise combining production and sale together with Hehui In...

pdc bit tricone bit oil gas drilling...