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办理煤安(MA)认证多久可以拿证?
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◆  一般产品5-6个月就可以拿证,产品的检测周期要看涉及的试验项目和产品的复杂程度。

◆ 阿凡提帮很多客户做过煤安(MA)认证和防爆认证,需要详细了解煤安认证周期流程价钱可以联系我们。

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