西安东新石油设备厂有限公司
Exhibit Profile：
1. Under-pressure wellhead gate valve replacement；2. Under-pressure wellhead gate valve segment drilling-through and gate valve replacement ；3. High-pressure fracturing operation device on low pressure wellhead；4. Wellhead devices and Christmas trees；5. D
Exhibits show：
1. Under-pressure wellhead gate valve replacement；2. Under-pressure wellhead gate valve segment drilling-through and gate valve replacement ；3. High-pressure fracturing operation device on low pressure wellhead；4. Wellhead devices and Christmas trees；5. D
Exhibits show：
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