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Installation of refrigeration equipment. The refrigeration system of the cold storage includes evapo...
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The following standards contain provisions that constitute the provisions of this standard by ref...
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So celebrities can choose these lifting stages when they have a concert and these stages can highlig...
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The professional information of aluminum alloy lifting platforms and the development of different eq...
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The second is that the steel will have obvious thermal expansion effect at low temperature. Although...
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Leakage occurs due to looseness, vibration, and the influence of heat on the sealing surface and pip...