intshayelelo emfutshane
Iimveliso zaseJapan zinokwahlulwa zibe ziimveliso ze-tubular kunye neemveliso ezingezizo ii-tubular (oko kukuthi, udidi a kunye neemveliso zecandelo b).I-PSE Mark inyanzelekile kwiimveliso ezilawulwayo, kwaye i-s-mark iyakhethwa kwiimveliso ezingalawulwayo.
