Top-Up Industry Corp is an ISO 9001-certified manufacturer of a wide variety of electronic parts including potentiometers, encoders, knobs, attenuators, switches, SMT jacks, varistors, remote controls and so forth. Besides our main product offerings, Top-Up also provides some on-demand customization and services such as PCBA assembly, SMT, and other processing. We have abundant experiences working and supporting global clients from industries across instrumentation, home electronics, communication system, industrial control, medical device, automotive, and more for 30+ years. We treat our clients like partners and have continued providing quality products, great value-added services, and innovative designs.