Koge Micro Tech Co., Ltd. engages in the production and sale of air pumps, solenoid valves, precision instruments and medical equipment. Its products include air pumps such as diaphragm compress pumps and electromagnetic pumps, vacuum pumps such as diaphragm vacuum pumps and piezoelectric pumps, liquid pumps such as diaphragm liquid pumps and gear pumps, one-way solenoid valve, two-way solenoid valve, three-way solenoid valve, air valves such as combined-type and linear-type solenoid valves and liquid valves such as normal close liquid valves. The company was founded by Kun Lin Chang in 1978 and is headquartered in New Taipei, Taiwan.