Printed circuit boards and catalyst converters.
Automatic voltage stabilizer, voltage regulator, UPS (uninterruptible power supply), EPS (emergency power supply), indicator, circuit breaker, push-button & select switch, switch & jack/socket, digital meter (for measuring voltage, current & temperature), doughnut coil, voltage transformer, current transformer, pz30 electric switch box, relay, fuse, nylon cable tie, any kinds of screw.
