发布时间:2025-01-31 04:22:56
一般是1.5-1.8MM,4-5公斤吧。根据路面的粗糙情况 密度在1.8-2.3左右 大部分在1.9-2.0克/立方厘米
儿童保温杯推荐哈尔斯 lx40014 儿童吸管保温杯 红色 400ml
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