![[UNIFIVE]AC/DC Power Adapter&Switching Power Supply Manufacturer](common/img/header-logo.svg){kind=logo}
Commitment to Quality
As a manufacturer of AC/DC Power Adapter and switching power supplies, we have established a quality assurance system covering all processes, from incoming component inspection to design verification, manufacturing process control, reliability testing, and post-shipment traceability. This page introduces the specific control methods and quality standards applied at each stage.
Quality Policy
Our company is founded on the principles of quality control as defined in JIS Z 8101 (Quality Control Terminology). Quality control is a systematic approach to economically producing Products that meet customer requirements, and it requires the participation and cooperation of everyone at every stage of corporate activity, including top management, managers, supervisors, and operators. Based on this company-wide quality control (TQC) philosophy, we have established a system that builds quality into every process, including design, procurement, manufacturing, inspection, and shipment.
All employees strive to improve their technical capabilities while continuously conducting evaluation and improvement at each process stage. Rather than prioritizing short-term cost reductions, we place emphasis on quality decisions that lead to long-term trust, and delivering Products that customers can adopt with confidence is the foundation of our quality policy.
Certifications and Safety Standards
 ISO 9001:2015 Certificate |  ISO 14001:2015 Certificate |
| Certification / Standard | Details |
|---|---|
| ISO 9001:2015 | Certified Quality Management System (Certification body: CQC) |
| ISO 14001:2015 | Certified Environmental Management System |
| Safety Standards and Factory Certification | Obtained various international safety certifications and factory approvals including Japan PSE, UL/CUL, TUV, EK-MARK, CCC, and BSMI |
Quality Management System
Our design, manufacturing, quality assurance, and management departments work together to control quality throughout all processes. Including a traceability system that stores historical data for all Products for 20 years, we provide detailed information on specific management methods, inspection systems, and improvement processes on the following pages.
 | Quality Management System for Our AC/DC Power Adapter An explanation of third-party design verification by the QA department, manufacturing control based on process FMEA, and management methods covering all stages from incoming inspection to final shipment inspection. |
 | Details of our management system that enables tracking of manufacturing lots, used components, and production processes. We store historical data for all Products for 20 years, allowing us to immediately identify the cause in the unlikely event of a quality issue. |
 | Products Design and Quality Verification An explanation of the verification process to build quality into the product from the design stage, including prototype evaluation, confirmation of compliance with safety standards, and the process for mass production transition decisions. |
Management of Parts and Materials
AC/DC Power Adapter and switching power supplies are greatly influenced by the quality of the parts and materials used. Please see below for details on each topic, from supplier selection criteria to management of contained chemical substances.
 | How to Select Component Suppliers Explains the criteria for selecting suppliers by comprehensively evaluating quality, cost, and supply stability, as well as how to build reliable cooperative relationships. |
 | Describes specific methods for managing contained chemical substances in accordance with the RoHS Directive and REACH Regulation, including an incoming inspection system for all purchased components using X-ray fluorescence analyzers. |
 | Countermeasures for Red Phosphorus (Ion Migration) Explains the non-use management of red phosphorus flame retardants in DC plug sections, including management standards continuously applied since 2016 and the manufacturer control system to prevent silent changes. |
Manufacturing Process Control
To ensure quality during the manufacturing stage, we have established control standards, inspection methods, and testing systems for each process. The following pages introduce our specific initiatives.
 | This page explains the details and implementation system of various reliability tests that simulate customer usage environments, such as temperature cycle tests, vibration tests, drop tests, and accelerated life tests. |
 | Control Methods for the Ultrasonic Welding Process of Enclosures AC/DC Power Adapter This page explains the setting and control methods of welding conditions and the quality inspection system in the ultrasonic welding process used for assembling enclosures. |
Compliance with Safety Standards
AC/DC Power Adapter and switching power supplies cannot be supplied to the market unless they comply with the safety standards of each country. We have a proven track record of compliance with safety standards around the world, including Japan's PSE.
 | About the Electrical Appliance and Material Safety Act (PSE) This section explains an overview of the Electrical Appliance and Material Safety Act (PSE), which is required to sell AC/DC Power Adapter in the Japanese market, as well as our compliance framework. |
 | Compliance with Global Safety Standards We explain our track record and certification framework for complying with global safety standards such as PSE, UL/CUL, TUV, CE, CCC, and BSMI. We support the acquisition of appropriate safety certifications from the design stage according to the countries and regions where our customers' Products will be shipped. |
Customer Evaluations
As a result of our quality initiatives introduced on this page, we have received high evaluations from our business partners regarding supplier quality and management systems. Below are some of the awards and certificates we have received from our customers.
Mitsubishi Electric Corporation
We have received multiple awards from Mitsubishi Electric Corporation in recognition of our contributions to their business. In 2021, we were presented with a letter of appreciation commemorating the 100th anniversary of Mitsubishi Electric's founding, and in fiscal year 2023, we received the Outstanding Supplier Award, building a long-term relationship of trust.
Outstanding Supplier Award (2024, FY2023)
 Outstanding Supplier Award Trophy (2023) |  Certificate of Appreciation (2024) |
100th Anniversary of Founding Letter of Appreciation (2021) / Certificate of Appreciation (2009)
 100th Anniversary Letter of Appreciation (2021) |  Certificate of Appreciation (2009) |
Brother Industries Group
The Brother Industries Group has continuously given us high evaluations in its QCDE (Quality, Cost, Delivery, Environment) assessment activities. Beginning with the Quality Award in FY2017 and the Special Award in FY2018, we have also obtained A-rank Supplier certification and certification for our chemical substances management system.
QCDE Assessment Activities Quality Award (FY2017)
 Quality Award Trophy |  Quality Award Certificate |
QCDE Evaluation Activity Special Award (FY2018)
 Special Award Trophy |  Special Award Certificate |
A-Class Supplier Certification (FY2013, FY2014)
 A-Class Supplier Certification (FY2013) |  A-Class Supplier Certification (FY2014) |
Certificate of Compliance for Chemical Substance Management System (2020)
 Certificate of Compliance for Chemical Substance Management System (2020) | This certificate verifies that our chemical substance management system complies with the audit standards of the Brother Industries Group. Our management of chemical substances throughout the entire supply chain, including compliance with the RoHS Directive and REACH Regulation, has been evaluated. |
Recognition from Industry Organizations and Partners
In addition to recognition from our customers, we have also received recognition for our initiatives from safety standards certification bodies and business partners.
 Japan Electrical Safety & Environment Technology Laboratories (JET) |  Willas-Array Electronics (Holdings) Limited |
Related Pages
For more information about our approach to quality and our efforts toward social responsibility, please also see the following pages.