下列法规和标准的目的是使所提供的材料和产品质量达到一个可接受的水平。
The following codes and standards are intended to provide an acceptable level of quality for materials and products.
可接受的退货仅指出现产品质量问题且该问题是由“公司”认可的，问题产品自购买日期不得超过3个月。
Return are accepted only when the commodity is defective and the defective condition is agreed upon by the 'company'; and the commodity was purchased within the last 3 months.
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