home page > About the group > Honorary Certificate
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Letter of Authorization
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Hongyuan Kate Certificate of Environment Management System
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Hongyuan Petroleum Environmental Management System Certificate
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Hongyuan Petroleum and Natural Gas Environmental Management System Certificate
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Hongyuan Kate Certificate of Occupational Health and Safety Management System
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Hongyuan Petroleum Certificate of Occupational Health and Safety Management System
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Hongyuan Petroleum and Natural Gas Certificate of Occupational Health and Safety Management System
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Hongyuan Kate Certificate of Quality Management System
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Hongyuan Petroleum Certificate of Quality Management System
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Hongyuan Petroleum and Natural Gas Certificate of Quality Management System
