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Yuam kom convection iav tempering cub tawg
Kab Rov Tav Cov Rooj Vag Qhov Rooj Ob Chav (Yuam Kev Sib Txuas) Lub Qhov Cub Iav Tempering Tiaj yog siv los tsim cov iav architecture, cov khoom siv hauv tsev siab heev, iav kho kom zoo nkauj, Tsheb & Tsheb ciav hlau & Nkoj iav, cov iav nyias tempered thiab laminated zoo, iav teeb pom kev zoo.
