Te hanga iti i tenei ra ki te korero ki a koe mo te pupuri i te mohio noa mo te kaiwhakahaere motuka dc. Ki te kore e taea e te kaiwhakahaere motuka dc te tiimata, ko nga take e whai ake nei: 1. Kaore he ngaohiko; 2. Momotunga ara iahiko excitation; 3. Paraihe momotu iahiko; 4. Kei a koe te mana engari kaua e huri. Ki tenei mutunga, ka taea e tatou te tango i te tikanga ko: 1. Whakamātautauhia te mana me te whakakoi he noa; 2. He mea noa te whakamatautau i te awhiowhio me te timata; 3. Whakamatauhia te awhiowhio awhiowhio me te commutator whakapiri paraihe he mea noa; 4. Te whakamatautau mehemea he taumaha te uta, ka taia te patu.
Ko te roopu HOPRIO he kaihanga ngaio o te kaiwhakahaere me nga motuka, i whakapumautia i te 2000. Te tari matua o te roopu i Changzhou City, Jiangsu Province.