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Tel: 086-010-80746618

Website: http://www.bjnvc.cn

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Energy saving and environmental protection product certification

Energy saving and en [1]

Contract and keep the information enterprise certificate

Contract and keep th [1]

Credit grade AAA enterprise unit service

Credit grade AAA ent [1]

National AAA grade quality and honesty brand enterprises

National AAA grade q [1]

Shou contract re-credit enterprises

Shou contract re-cre [1]

Shou contract re-credit units

Shou contract re-cre [1]

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