dhparts.com supply oilfield equip parts for Bomco,Baoji oilfield,Lanzhou LS,NANYANG RG PETRO,SICHUAN HONGHUA,SJ PETRO,SHANGHAI SHENKAI,BEIJING BPMF,PSK,GOLD BASIN,DONGSU,RENQIU BOKE,and products meet API 6A,16A,16C,16D,7K,8C,7-1,4F,6D
Jining Donghong Machinery Co., Ltd
www.dhparts.com
spareparts1960@foxmail.com
dh@dhparts.com
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Skype: spareparts1960
API OSHA IADC OPEC RIG ZONE WORLD OIL Drilling Formulas
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