发布时间:2025-01-23 03:26:30
废旧耐火砖已经成型,没什么污染,可以回收做骨料用。耐火砖主要污染是在烧制过程中煤气污染,粉尘污染等
东成 dcjz1010e 锂电充电钻 标配双电池47带调速档
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