认证
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Suruhanjaya Perkhidmatan Air Negara (SPAN)
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American Water Works Association (AWWA)
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National Sanitation Foundation (NSF/ANSI 61)
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ISO 9001:2015
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Suruhanjaya Perkhidmatan Air Negara (SPAN)
American Water Works Association (AWWA)
National Sanitation Foundation (NSF/ANSI 61)
ISO 9001:2015