Huizhou Greetech Electronics Co., Ltd. (operating under the Unionwell sensing and control corporate group, and with roots tracing back to the Zing Ear brand) is a high-volume manufacturer of miniature switches, tactile switches, sealed micro switches, and precision automotive electrical connectors based in Huizhou, Guangdong.
Operating from a modern production facility spanning over 65,000 square meters, Greetech houses end-to-end tooling, injection molding, stamping, automated assembly, and testing lines. The company maintains certifications for ISO 9001, IATF 16949, and ISO 14001, while product lines are certified to UL, cUL, ENEC, CE, CB, and CQC standards.