High & Low Corporation
High & Low Corp., established in 1994, is a high-tech enterprise specialized in the R&D, production, and global sales of EMI filters. With an efficient and well-established development system, a dedicated testing laboratory (SMTA), and a sample center, the company has obtained IATF 16949、ISO 14001 and ISO 9001 management system certifications.
With 30 years of experience in electromagnetic compatibility solutions, our products are widely used in industries such as industrial, communications, medical, automotive, and military, covering more than 10 economic sectors. We possess a mature safety certification system.
Global Stringent Safety Certifications
REACH​
EU
RoHS​
EU
CCC
China
CQC
China
cULus​
US/Canada
ENEC
EU
VDE
EU
CE
Europe
UKCA
UK
History
2025
2018-2023
2015-2017
2013-2014
2011-2012
2007-2008
2005-2006
2003-2004
2001-2002
1998-1999
1994-1997
Achieved IATF 16949 Certification
Global Automotive Quality Management System Standard
Evaluated to High -tech enterprise
Listed as a production enterprise of medical supporting materials for epidemic prevention and control by the State Council Introducing the Responsible Business Alliance (RBA) Code of Conduct
Establishment of the European Sales Center
Introduced GP Electronic Operating System
ISO 14001 implemented
Establishment of the Plastic Products Division
High&Low has an independent automatic production line for plastic production
Safety approvals for all filters were upgraded to UL1283 5thEdition, EN60939 : 2005.)
Introduce QC080000 management system
All filters completed full range of RoHS compliance, and EMC laboratory was set up according to ISO/IEC17025. IECQ QC080000 approval.
New ERP system
ERP system was conducted for improving manufacturing management .
Established R&D center in Shenzhen
Whole series of products were updated to Medical grade, and obtained CSA approval.
Established factory in Shenzhen
H&L completed ISO 9002 management system
Began researching and developing
The company began researching and developing, and manufacturing EMI filters.
Qualification
Patent
Corporate Sustainability
E. Environmental
Air pollution, energy management, product packaging, biodiversity, carbon reduction
S. Social
Human rights issues, community care, customer relations, labor welfare
G. Governance
Business Ethics, Supply Chain Management, Risk Management, Tax Explanations
Responsible Business Alliance
High&Low is committed to strictly following the policy framework set by the Responsible Business Alliance (RBA). We fully demonstrate our responsibilities in five key areas: Labor, Health & Safety, Environmental Protection, Business Ethics and Management Systems to ensure that our operations in the global supply chain meet the highest standards.
  • LABOR
  • HEALTH AND SAFETY
  • ENVIRONMENT
  • ETHICS
  • MANAGEMENT SYSTEMS
High&Low is committed to protecting the fundamental rights of employees, eliminating forced labor, child labor, discrimination, and abuse. We adhere to fair recruitment and compensation standards, ensuring that all employees work in a safe, respectful, and equitable environment, with reasonable working hours.
Prohibition of Forced Labor
Young Workers
Working Hours
Wages and Benefits
Non-Discrimination/Non-Harassment/Humane Treatment
Freedom of Association and Collective Bargaining
We prioritize the health and safety of our employees and strictly comply with RBA's health and safety standards. Licheng Technology employs advanced chemical management processes to reduce the risk of employees being exposed to harmful chemicals during production, and we ensure workplace safety through engineering controls and protective equipment.
Occupational Health and Safety
Emergency Preparedness
Occupational Injury and Illness
Industrial Hygiene
Physically Demanding Work
Machine Safeguarding
Sanitation, Food, and Housing
Health and Safety Communication
High&Low actively fulfills its environmental responsibilities and is committed to reducing carbon emissions and waste during the production process. We adhere to the environmental management requirements of the RBA, utilizing energy-saving technologies and environmentally friendly materials to protect natural resources and minimize negative impacts on the environment.
Environmental Permits and Reporting
Pollution Prevention and Resource Conservation
Hazardous Substances
Solid Waste
Air Emissions
Materials Restrictions
Water Management
Energy Consumption and Greenhouse Gas Emissions
High&Low is committed to protecting the fundamental rights of employees and eliminating forced labor, child labor, discrimination, and abusive behavior. We adhere to fair recruitment and compensation standards, ensuring that all employees work in a safe, respectful, and equitable environment, with reasonable working hours.
Business Integrity
No Improper Advantage
Disclosure of Information
Intellectual Property
Fair Business, Advertising and Competition
Protection of Identity and Non-Retaliation
Responsible Sourcing of Minerals
Privacy
High&Low is committed to protecting the fundamental rights of its employees and eliminating forced labor, child labor, discrimination and abuse. We follow fair recruitment and compensation standards to ensure that all employees work in a safe, respectful and fair working environment and at reasonable hours
Company Commitment
Management Accountability and Responsibility
Legal and Customer Requirements
Risk Assessment and Risk Management
Improvement Objectives
Training
Communication
Worker/Stakeholder Engagement and Access To Remedy
Audits and Assessments
Corrective Action Process
Documentation and Records
Supplier Responsibility
Advantages of cooperation
High&Low provide one-stop EMC solutions
Brand
High&Low brand enjoys a good reputation in the EMI filter market, with 30 years of experience in electromagnetic compatibility, and has won the trust of customers around the world with high-quality products and stable performance.
International certifications and standards
1. Multiple international certifications:High&Low filter products have passed major international safety certifications such as UL, CSA, VDE, etc., which meet the compliance requirements of the global market, facilitate suppliers to sell in the markets of various countries, and reduce the cost and time of certification.
2. International standard compliance: Our products are designed to strictly follow international standards to ensure the reliability and safety of the equipment in the global market.

Production and manufacturing advantages
1. Modern manufacturing facilities: High&Low Technology's own factory is equipped with advanced production equipment and automated processes to ensure efficient production cycle and flexible order processing capacity. 2. Strict quality management: We implement strict quality control standards, from raw material procurement to finished product delivery, the whole process is monitored to ensure the high quality and consistency of each batch of products, and reduce your worries.
Service support
1. Stable supply chain management: High&Low focuses on establishing long-term cooperative relations with suppliers, and ensures the continuous supply and efficient delivery of products through stable supply chain management.
2. All-round technical support: We provide comprehensive technical support, including product selection, application guidance, and after-sales service, to help suppliers succeed in the market.