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instrument
1 年
NFPA 70-2023 National Electrical Code.pdf
《快递包装重金属与特定物质限量》(GB 43352—2023)于今年6月1日起正式实施。本国标分别针对纸类、塑料类、纺织纤维类及复合材料类快递包装产品,提出了铅、汞、镉、铬等重金属总体限量要求和单独限量要求,同时规定了溶剂残留、双酚A、邻苯二甲酸酯等 ...
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