Ko Yuhuang Electronics Dongguan Co., Ltd. hei tohunga mo te whakamaarama whakamaarama, i hangaia i te tau 1998, kei te taone nui o Dongguan, te turanga tukatuka waahanga taputapu rongonui o te ao.
Hangaia nga toromoka i runga i te GB, American Standard (ANSI), Germany Standard (DIN), Japanese Standard (JIS), International Standard (ISO), I tua atu, he mea whakarite i runga i o whakaritenga motuhake.
Ka rite ki te tohunga otinga toromoka whakaritea, i whakaturia i roto i te 1998, kei roto i Dongguan City, te ao-rongonui wahi pūmārō turanga tukatuka.
Hei whakatutuki i nga hiahia o nga kaihoko, ka taea e Yuhuang te whakarato ki a koe nga hua tautoko, tautoko hangarau me nga ratonga hua
tuku mai inaianei