(1) Cov teeb meem thaum muaj xwm ceev thiab tawm hauv chav tua hluav taws yuav tsum ua raws li cov cai yuav tsum tau ua.
(2) Cov twj hluav taws kub, cov roj hmab tsuag tsuag, cov twj tso pa hluav taws xob ruaj khov lossis lwm yam kev hloov pauv dej hloov pauv lossis lwm yam kev hloov pauv.
(3) Kev kuaj qhov chaw ntsuas hluav taws xob valve thiab cov pa dej ntws yuav tsum tau muab ntsia rau ntawm qhov hluav taws xob ntawm cov raj hluav taws kub.
(4) Qhov chaw ntawm thaub qab fais fab khoom thiab tsis siv neeg hloov chaw yuav tsum ua tau raws li cov qauv tsim.