Scope ntawm daim ntawv thov ntawm fabrics: txhua yam ntawm sab nraum zoov awnings, awnings, ntxoov ntxoo sails, muaj yeeb yuj awnings, viav vias awnings, thiab lwm yam. 1. Raw khoom: Polyacrylonitrile ntaub, muaj li ntawm raw kua chromoso ...
Nyeem ntxiv