Fable one Do you only do the same job? The animals were having a fellowship meeting, leading the Secretary fox to the donkey and saying, "&ldquo, your voice is high, let's sing a solo.&q..

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There are some defects in the application of dynamic sealing technology in our country, especially the shaft end seal of pump. The traditional method of pressure plate root sealing has always been use..

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It's not easy to install a valve. There are 14 major taboos. Do you know? What will happen if you break these taboos? And how to solve it?Taboo 1Water pressure test under negative temperature in winte..

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Since 2017, the rising price of all walks of life has been heard, crude oil prices, metal prices, rubber prices, chemical products price tide is no exception. With the &ldquo, the most stringent shutd..

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