Kiwango kipya cha vifuta unyevu kuhusiana na kubadilikabadilika kimezinduliwa na Shirika la China Nonwovens and Industrial Textiles Association (CNITA). Kiwango hiki kinabainisha wazi malighafi, uainishaji, uwekaji lebo, mahitaji ya kiufundi, viashiria vya ubora, mbinu za mtihani, sheria za ukaguzi, pakiti...
Soma zaidi