DP4系列多功能电量测量仪TE-SE电力参数测量仪，

上海托克生产销售一系列电流电压表DP5，DP4.DP3，TE，DB5，DH4，DB4，DB3，DH3系列等等：

DB3-AV0.2 DB3-AV2 DH3-DV DH3-AA DH3-AV DH3-DA 、DH6-AA DH6-AV DH6-DA DH6-DV、DH7-AA DH7-AV DH7-DA DH7-DV、                 DH8-AA DH8-AV DH8-DA DH8-DV、DH9-AA DH9-AV DH9-DA DH9-DV，DB3-AA DB3-AV DB3-DA DB3-DV DB3I-AA DB3I-AV DB3I-DA DB3I-DV，DP3-PAA DP3-PDA DP3-PAV DP3-PDV，DH4I-PAA DH4I-PAV DH4I-PDA DH4I-PDV，DB4-AA,DB4-AV,DB4-DA,DB4-DV,DB4I-AA,DB4I-AV,DB4I-DA,DB4I-DV,DB4-PAA DB4-PAV DB4-PDA DB4-PDV，DB4I-PAA DB4I-PAV DB4I-PDA DB4I-PDV DB5-AA DB5-AV DB5-DA DB5-DV，DP5I-PAA DP5I-PAV DP5I-PDA DP5I-PDV