发布时间:2025-02-01 08:48:54
SGS是一个发证机构,不是一种证书。ROHS是测的六项,汞、铅、镉、六价铬、多溴联苯和多溴联苯醚。ROHS2.0是新的标准,测是十项,较之ROHS多测试了四项。
——阿尔法商检
我想买吸顶喇叭 一直不知道买哪个性价比高 你推荐几个品牌我选择
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