China·Tianzheng Valve Co., Ltd.  
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Tianzheng Valve Co., Ltd. was founded in 1985, located in "China valve village"-Oubei, Yongjia, Wenzhou, is a professional safety valve enterprise integrating research, development, manufacture, testing...

 
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Common defects in ultrasonic flaw detect

Common defectCommon defects in ultrasonic flaw detection of steel val

2016-12-13
Non destructive testing terminology

Non destructive testing terminology

2016-12-13
 
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