Basalt raws li cov khoom siv ntsuab hauv 21 xyoo pua yog dav siv hauv tsev, txoj kev, thiab lwm yam. Tsuas yog cov pob zeb basalt, cov khoom lag luam uas siv cov khoom siv hauv basalt yog cov khoom siv raw khoom, nrog rau cov khoom siv basalt fiber rov. Basalt fiber ntau rov, uas siv lub ntuj ua ...
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