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Painting RM. Fire fighting pipe to be done air-tightness test.
油漆间消防管系密性试验。
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Ref. Freon piping to be done air-tightness test and vacuum test.
冷藏氟利昂管系密性试验和真空试验。
Ref. Freon piping to be done air - tightness test and vacuum test.
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