Goldenman Petroleum Equipment Co., Ltd. is standing in beautiful oilfield-city, Dongying, Shandong provinence, China. After 20 years' running, Goldenman has its own factories to provide drilling strings, valves, BOP, cementing tools and other accessories of rigs with API & ISO certifications. Main products are delivered to 80 countries and areas, like the USA, Canada, Saudi Arabia, Oman, the UAE, Russia, Thailand, Australia, etc. At the same time, we also get our customers' high reputation returned as our great brand. Goldenman always insists on the value that ' Quality and customer are first', and we look forward to being your reliable partner in China.