Cov Khoom Siv Kaw

Ib lub cuab yeej kaw kom zoo yog qhov kawg ntawm "Qhov Rooj Hluav Taws Kub" Hluav Taws Kub "Hluav taws kub qhov rooj hluav taws xob. A7SDI 118-2001 lub qhov rooj hluav taws yuav tsum yog nyob rau hauv ib qho kev kaw thiab latchedosition ua haujlwm ua kev tiv thaiv kev tiv thaiv hauv qhov hluav taws. Vim li no, ib qho chaw teev khoom siv hluav taws xob lossis lub qhov rooj teev los ze dua.Thaum lub qhov rooj kaw