: DONGGUAN YUYANG INSTRUMENT CO.,LTD

Dong Guan Aopiqiu Watch Co., Ltd.,

ASTM D3078 GB/T 15171 Flexible Packaging Leak Testing Equipment

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DONGGUAN YUYANG INSTRUMENT CO.,LTD

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ASTM D3078 GB/T 15171 Flexible Packaging Leak Testing Equipment

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ASTM D3078 GB/T 15171 Flexible Packaging Leak Testing Equipment

ASTM D3078 GB/T 15171 Flexible Packaging Leak Testing Equipment Testing Principle By evacuating the vacuum chamber, an internal and external pressure difference is created in the sample immersed in ...

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