natural pumice meaning in Chinese

天然浮石
天然轻石

Anchor s artificial cylindrical pumice stones are designed for blue jeans finishing , according to the structure of natural pumice for a combination with specially raw materials and corundum , can not only shorten dye time for a uniform structure of artificial pumice , but also make clothes dying uniform and beautiful
制衣染整业专用浮石是依天然浮石之结构，利用特殊原料与金钢砂结合，可缩短染整时间又因人造浮石外表组织结构一致，可使衣物染整表面均匀美观。