The air leak tester of GST-4000 is successfully designed according as the characteristics of Fuel Gas Stopcock and test demands.
的基础上，根据燃气具旋塞阀的具体特点及检测要求而开发的一款产品。
The air leak tester of GST-4000 is successfully designed according as the characteristics of Fuel Gas Stopcock and test demands.
的基础上，根据燃气具旋塞阀的具体特点及检测要求而开发的一款产品。
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