English 
Tel: +86-546-8741007
Phone +86-13780771900
Email: terry@dysyhy.com
Email: terry@dysyhy.com
Whatsapp: +86-13780771900
South of Yongxin Road, Kenli District, Dongying, Shandong Province, China 257500
Great Petro has successively obtained certificates of gate valve, throttle valve, tubing head and casing head PR2, with an annual output of 1000 sets. Products are exported to the United States, Saudi Arabia, Oman, India, Russia, Turkmenistan, Kazakhstan, Venezuela, Peru and other countries.
Great Petro has successively obtained certificates of gate valve, throttle valve, tubing head and casing head PR2, with an annual output of 1000 sets. Products are exported to the United States, Saudi Arabia, Oman, India, Russia, Turkmenistan, Kazakhstan, Venezuela, Peru and other countries.
