山西环界石油钻具制造有限公司
Exhibit Profile：
Our company owns a complete set of modern assembly lines for the production of petroleum drilling tools and special pipes, including drill rods, drill collars, non-magnetic drill collars, spiral drill collars, heavyweight drill rods, Kelly bars, drill pip
Exhibits show：
Our company owns a complete set of modern assembly lines for the production of petroleum drilling tools and special pipes, including drill rods, drill collars, non-magnetic drill collars, spiral drill collars, heavyweight drill rods, Kelly bars, drill pip
Exhibits show：
Website：http://www.huanjie.com.cn