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State Grid 10-35kV cable permission certificate
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State Grid 110kV and above cable permission certificate
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Chine Southern Power Grid stair material supplier evaluation notification
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Sinopec material supplier
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CNPC material supplier permission certificate
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CNPC Huabei Oilfield branch market permisson certificate
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Daqing oilfield permission certificate
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Mine product safety mark certificate
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Zhejiang province public resource trading center trading card
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Inner Mongolia Power preliminary qualified notification
