 12 na mba ọkọlọtọ GB T9043-2008 Communication Equipment Nime-voltaji Protection na General ụzụ Ọnọdụ na Gas Ihapu tube, wdg Gas Ihapu tube bụ RoHS Dabara, nwekwara e gbaara site German TüV, American Mankeumman na SGS. 