Electrical products which have LCD time counter, Layer sensor, Three-phase AC fault protection relay and so on.
其中电器类产品有液晶显示计时计数器、平层感应器、断相错相三相交流保护继电器等等。
3
Counter workers may also be employed in specialty firms that supply only certain types of parts, such as electrical and carburetor systems, mufflers, brake parts or similar equipment.