self 2022 TOPS Tong“Jiagao Electronics (Dongguan) Co., Ltd”Since the cooperation, with the trust and reliance established by excellent product quality and good after-sales service, Dingzhun won another order for its Thailand factory's thermal shock test box in July 2025, and successfully completed the localization installation and delivery training of the equipment in Thailand in October; During the installation training process, our after-sales engineers who provided convenient transportation support to the on-site training staff at the Thai factory were greatly appreciated by Dingzhun! TOPS will continue to provide top-notch product quality and comprehensive solutions with precision, stability, safety, and energy efficiencyThoughtful in positionAfter sales service, assistanceRaise the Thai factoryFaster and better sustainable development.

Taiwan raises its altitude（HELE）We are a Taiwanese company specializing in the research and manufacturing of frequency control crystal oscillator components, established inIn 1976, its headquarter was located in Taiwan, China, China.

Product line:Covering passive crystal oscillators, active crystal oscillators, voltage controlled oscillators, etc., such asHSX221SA ultra small crystal oscillator, X2BO48000BZ1H-HZ passive crystal oscillator, etc. ‌

Technical directionFocusing on high temperature tolerance, miniaturized design, and precision improvement, the product is suitable for consumer electronics, industrial equipment, automotive electronics, and other fields. ‌

Production and Layout：The production bases are distributed in Taiwan, China, Chinese Mainland and Thailand, forming a global supply chain network