... of light industry, chemistry, machine, metallurgy, ceramics, pertrification industry, or temperature control and adjust system of food &beverage; oven; furnance, plastic extruder ... , including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter ...