Flame retardants refer to a variety of substances that are added to combustible materials to prevent


Download 0.72 Mb.
Matnni ko'rish
bet1/4
Sana28.12.2022
Hajmi0.72 Mb.
#1010178



Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©fayllar.org 2024
ma'muriyatiga murojaat qiling