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4mm Toughened iav Rau Txhuas Tsev Tsev Khov Thiab Lub Vaj Tsev
Aluminium tsev cog khoom thiab vaj tsev feem ntau siv 3 hli toughened iav los yog 4 hli toughened iav. Peb muab cov iav toughened uas ua tau raws li CE EN-12150 tus qauv. Ob lub duab plaub thiab zoo li tus iav tuaj yeem kho raws li cov neeg siv khoom xav tau.
