Lub tuam txhab tau dhau xyoo 1994, 2000, 2008 ISO9000 kev tswj hwm kev tswj xyuas kev ua haujlwm tau ntawv pov thawj, ISO14001 - 2004 ib puag ncig kev tswj hwm daim ntawv pov thawj thiab OHSAS18001 - 2007 kev ua haujlwm kev noj qab haus huv thiab kev nyab xeeb kev tswj hwm daim ntawv pov thawj, tus kheej tsim thiab tsim PEX kav, pob li qub, thiab ua nyob rau hauv North American lub teb chaws thiab cheeb tsam ntawm NSF, CSA, UPC, UL thiab lwm yam ntau lawm.Cov khoom pov thawj.