QIAO 模温机专用 法兰加热管 HEATER NDYD7-26 13 PIECES OF DIL HEATER OF HOUSEHOLD ELECTRIC WARNING NUTE ELECTRIC HEATERS HIGH-POWER RADIATOR HEATER NDYD7-26 13 PIECES OF DIL HEATER OF HOUSEHOLD ELECTRIC WARNING 加厚 支持 管壁 定制 升级 304不锈钢 加厚材质防爆耐用