Iimveliso zethu ziqinisekiswa liziko lovavanyo le-SGS yobuchwephesha. Ukuqinisekisa umgangatho weemveliso zethu, silandela ngokungqongqo umgangatho wovavanyo we-EN1935 ngaphambi kokuba sithumele iimveliso ukuqinisekisa ukuba ziyaluphumelela uvavanyo lokuqina olungqongqo ukuya kuthi ga kumaxesha angama-50,000. Kwiimveliso ezineziphene, sine-100% yokuhlola isampuli, kwaye silandele ngokungqongqo incwadana yokuhlola umgangatho kunye nenkqubo, ukwenzela ukuba izinga eliphosakeleyo lemveliso lingaphantsi kwe-3%.