Yantai Yunsheng Petroleum Machine Accessories Co.,
[Shandong China (Mainland) ]
- 1st
- Business Type:
- Manufacturer
- Total Revenue:
- Main Products:
- sucker rod coupling is made according to API SPEC 11B,the raw meterial is good steel alloy<br /> 40cr,and the function is wear-proof,corrosion-resisting and reducing the friction.<br /> guochuijie(at)
Contacts
- Ms. melody