GB 50242-2002 第4.2.3条
2. Clause (flushing and disinfection) and 4.2.5 (water supply and drainage pipe spacing) are key points in hotel hygiene and epidemic prevention acceptance.
2. Clause (flushing and disinfection) and 4.2.5 (water supply and drainage pipe spacing) are key points in hotel hygiene and epidemic prevention acceptance.
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