Yueyang Changling Equipment Research Institute Co., Ltd.

PerformanceCase study

Qualified suppliers and service providers of major enterprises such as Sinopec, CNPC, and CNOOC.

Key Achievements in Non-Stop, Pressurized Work Technology


■ Sinopec Changling Branch: turnkey contracting for pressurized leak‑stopping services, pressurized tapping operations, and pressurized plugging operations.
■ Yueyang Xingchang Co., Ltd. – Pressurized Leak-Stoppage, Hole-Drilling, and Pressurized Plug-Sealing Services
■ Hunan Zhongchuang Chemical Company’s pressurized leak‑stopping, hole‑drilling, and pressurized plugging services
■ Sinopec Wuhan Branch’s pressurized leak‑sealing and pressurized tapping services
■ Sinopec Jiujiang Branch’s Live-Line Hole-Opening Services
■ Hunan Valin Xianggang Co., Ltd. – Pressure‑bearing leak‑stopping services, hole‑making services, and pressure‑bearing plugging services
■ Shanghai Petrochemical’s Pressurized Hole-Opening and Pressurized Plugging Services
■ Pressurized tapping and pressurized plugging services for Zhongyuan Ethylene
■ Tianjin Petrochemical’s Pressurized Hole-Opening Services
■ Pressurized tapping services at Xi’an Petrochemical
■ Pressurized Leak-Stoppage Services of Yueyang Paper Industry Co., Ltd., Hunan Linzhi Group
■ Pressure‑assisted leak‑sealing services for caprolactam at Balingshihua, among others