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Casing head 
Tubing head 
Tubing bonnet 
Cross and Tee 
Wellhead assembly 
Slab gate valve 
Exp. gate valve 
Mud gate valve 
Choke valve 
Check valve 
Plug valve 
Choke manifold 
Kill manifold 
 
Certificate
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PetroChina network card(7)
PetroChina network card(8)
Special equipment manufacturing license
KQ65/78-105 Type test certificate
KQ65-70 Type test certificate
JG/YG65-70 Type test certificate
PFF65-70 Type test certificate
Integral casing head type test certificate
Patent(1)
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