ISO 9001
EHY Construction and
Engineering Co Ltd |
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ISO 9001
Engenharia Hung Yip |
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ISO 9001
Sun Hung Yip
Engineering
Construction Co Ltd |
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ISO 14001
EHY Construction and
Engineering Co Ltd |
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ISO 14001
Engenharia Hung Yip |
|
ISO 14001
Sun Hung Yip
Engineering
Construction Co Ltd |
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OHSAS 18001
EHY Construction and
Engineering Co Ltd |
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OHSAS 18001
Engenharia Hung Yip |
|
OHSAS 18001
Sun Hung Yip
Engineering
Construction Co Ltd |
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