
HIGH&LOW TECHNOLOGY CO.,LTD. develops and manufactures EMI/RFI power filters and related magnetic components, backed by in-house safety and EMC testing capabilities and long-term EMC expertise.
HIGH&LOW TECHNOLOGY CO.,LTD. (High&Low) is a developer and manufacturer of EMI/RFI filter solutions, focused on power-line EMC performance and reliable compliance for global markets. With its head office in Taipei, Taiwan and manufacturing operations in Shenzhen, China, the company supports customers with competitive pricing, rapid delivery, consistent quality, and practical engineering support.
The product portfolio covers AC and DC power filters, including single-phase and three-phase filters, PCB filters, feedthrough filters, socket-type filters, power-module filters, and application-oriented series for medical, industrial, home appliance, automotive, motor soft starter, and inverter/drive systems. High&Low also supplies EMI chokes and magnetic core accessories, and provides EMC debug consulting, international safety approval consulting, and EMC design training.
To ensure dependable performance from design through shipment, the Shenzhen facility operates under an ISO 9001 quality management system and includes automated winding, potting, and testing operations, along with dedicated assembly, test, and packaging lines. The company maintains its own safety laboratory and advanced test equipment to simulate complex electromagnetic environments, enabling thorough verification of product safety, reliability, and EMC effectiveness before delivery.

High&Low focuses on EMI/RFI filter solutions and power quality improvement in complex electromagnetic environments, supporting customers with one-to-one technical service for practical EMC results.
EMI filter products carry approvals from major safety bodies including UL, ENEC, UKCA, and VDE to support international compliance requirements.
From incoming inspection (IQC) through final testing and warehousing, production follows an ISO 9001 quality management framework to deliver stable performance and consistent reliability.
High&Low maintains a standardized safety laboratory and advanced test equipment to simulate complex electromagnetic environments, enabling rigorous product verification, tuning, and optimization.
The engineering team focuses on filter tuning for noise suppression, EMI handling, filtering accuracy, and frequency response to keep systems stable across demanding application scenarios.
High&Low supports customers with competitive pricing, rapid delivery, good product quality, and full support aligned with project and market needs.
Send an enquiry to learn more about their capabilities and request custom quotes.