Hom ntawm cov khoom siv rau cov khoom siv tshuab hlau

Muaj ntau ntau yam khoom siv hauv tshuab hlau, xws li 1200-1500 hom ob-lub tog raj kheej thom khwm tshuab qhov chaw, thiab ua cov kauj ruam ntawm cov khoom muaj ntau. Yog tias lub koomhaum tsim ntau lub tshuab tib lub sijhawm, qhov kev sib dhos thiab kev sib txuas ua ntej ntawm qhov yuav tsum raug npaj kom zoo kom paub meej tias cov khoom thiab qhov ntau npaum li cas rau lub rooj sib txoos ntawm tag nrho cov tshuab tuaj yeem muab rau hauv kev sibtham raws li tau teem tseg. Niaj hnub nimno textile machinery kev lag luam txais cov kev tswj tshiab thiab cov txheej txheem xws li khoos phis tawj thiab kev tsim qauv siv los tswj cov tuam txhab.