... leakproof seal 防漏密封 leakproof pump 密封泵 leakproof gasket 防漏垫圈 ...
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leakproof motor pump 防漏式电动泵
Switching valve division has been using the double pump patented corrosion resistant ceramic leakproof structure to ensure that fluid does not leak slurry drops.
双泵开关阀体采用本司已获专利的耐腐蚀陶瓷防漏结构，确保色浆滴浆不漏。
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