ControlAir电气转换器***：珠海***仪表有限公司，叶平0756-3895798，13928091509，combine-inst@常用的型号：550-ACD,550-ACA,550-ADA,550-AEA,550-AGA,550-AHA,550-EGA,550-EHA,550-AIA,550-AJA,550-AKA,550-***,550-EJA,550-EKA,550-ACD,500-AC,500-AD,500-AE,500-AF,500-BC,500-BD,500-BE,500-CC,500-CD,500-CE,500-DC,500-DD,500-DE,500-AG,500-AH,500-BF,500-CF,500-EH,)