Thermocouple, Thermocouple Cable, Thermocouple Connector manufacturer / supplier in China, offering Technical Alumina Ceramic Insulator Beads with 2 or 4 Holes, High Alumina Al2O3 Ceramic Insulator Bead for Wire Insulation, C610 Insulated 60% 75% 80% Alumina Al2O3 Ceramic Bead for Thermocouple Insulator and so on.