Mtondo wowuma ndi wophatikizika wa zida za simenti (simenti, phulusa la ntchentche, ufa wa slag, etc.), zophatikizika zapadera (mchenga wa quartz, corundum, ndi zina zambiri, ndipo nthawi zina zimafunikira ma granules opepuka, perlite yowonjezera, vermiculite yowonjezera, etc. ) ndipo zosakaniza zimasakanizidwa mofanana mu propo inayake ...
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