1. Kev xa khoom thiab kev lees paub yuav tsum yog raws li cov kev cai ntawm GB/T 2828 ntawm kev tshuaj xyuas ib-ntawm-ib pawg ntawm cov phiaj xwm sib piv. Cov neeg xaj khoom muaj txoj cai los tshuaj xyuas thiab lees txais cov khoom lag luam zoo raws li tus qauv no. Yog tias muaj lwm qhov xwm txheej, nws tuaj yeem tshawb xyuas thiab lees txais raws li daim ntawv cog lus lossis kev pom zoo ntawm tus neeg xa khoom thiab tus neeg yuav khoom.
2. Kev lees paub cov khoom lag luam tau hais tawm hauv cov lej ntawm cov khoom tsis tsim nyog rau 100 units. Kev lees paub qib zoo (AQL) thiab qib tshuaj xyuas (IL) ntawm cov khoom xa tuaj rau kev lees paub yuav tsum ua tau raws li Cov Cai 5.