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产品质量认证标志
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产品质量认证标志
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质量认证
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certification marking of product quality
产品质量认证标志
产品经法定的认证机构按规定的认证程序认证合格后,准许在该产品及其包装上使用的表明该产品的有关质量性能符合认证标准的标识。
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language selection rules
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Language Situation in China
languages of Gaoshan nationality
languages of the world
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