DC control module refers to core components of rotational velocity and torque of space index DC motor. That is, it can control series motor and parallel motor, and output strong driving pulse to....
Xi' an Joton Petroleum Electrical Technologies Co, . Ltd.is a Xi' an of China, High tech Industrial Park based company that specializes in providing engineered electrical power generation, ....
The Tester valve is a full-opening, annulus pressure operated tool. With applied pressure, the tool can be locked open and then returned to the normal operating sequence at any time. The ball....
ZZ TOP OIL TOOLS is the professional manufacturer for the drill stem testing tools and surface testing equipment, and reputed supplier of the oilfield equipment. As the manufacturer, we produce....