NTA: 1. siv rau kev ua cov phaj nyias.2. Cov hniav dabtsi yog khoov yog ib hom folded lub thawv, uas muaj cov qauv yooj yim thiab ua haujlwm yooj yim.3. Nws qhov siab tshaj plaws dabtsi yog khoov thickness yog 1.2/1.5 hli. MAIN TECHNICAL PARAMETER: