Peb cov khoom tau kis nruj ua kom ntseeg tau zoo thiab muaj ntawv pov thawj los ntawm cov koomhaum uas muaj tswv yim nyob hauv tsev thiab txawv teb chaws. Peb tau txais daim ntawv pov thawj los ntawm Asmeskas UL, European Union ROHS, cov ntaub ntawv hauv tebchaws kev lag luam ua si thiab Ningbo Institute ntawm kev saib xyuas zoo thiab tshawb fawb zoo. Cov tub ntxhais tseem ceeb ntawm lub txee nyob rau qib siab tshaj plaws hauv kev lag luam.
