Imyenda yo kwibira, izwi kandi nk'ibikoresho byo kwibira, ni ubwoko bwa reberi ya reberi ya sintetike, yoroshye, yoroshye kandi yoroshye.Ibiranga nubunini bwokurikizwa: kurwanya ikirere cyiza, kurwanya ozone gusaza, kuzimya, kurwanya amavuta meza, icya kabiri nyuma ya rubber ya nitrile, umurongo mwiza wa tensile ...
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