Ndewo, nke a bụ ndị na-emepụta kemịkalụ dị ọcha sitere na China, isi ihe anyị lekwasịrị anya bụ nchacha mmiri mmiri. Ka m webata otu ngwaahịa ụlọ ọrụ anyị-DADMAC. DADMAC bụ nnukwu ịdị ọcha, chịkọtara, nnu ammonium quaternary na nnukwu ụgwọ njupụta cationic monomer. Ọdịdị ya bụ agba...
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