
About our company
DOREXS was established in 2008 and has become a leading manufacturer of high-quality EMI filters and transformers. With over 15 years of expertise in the field, we have built a solid reputation both domestically and internationally for delivering innovative electromagnetic interference (EMI) solutions and power quality products.
Our factory, located in Chengdu, China, spans 2000 square meters and is equipped with advanced production lines and testing facilities. We employ a team of 50 highly skilled professionals, including an experienced R&D team dedicated to continuous innovation and improvement. Their expertise allows us to meet the specific needs of various industries, from industrial automation and medical devices to aerospace and consumer electronics.
All our products adhere to strict quality standards and are certified by international authorities such as UL, CE, ROHS, and ISO9001, ensuring reliability, safety, and performance. We take pride in our rigorous quality control processes and our ability to develop custom solutions tailored to the needs of our clients.
At DOREXS, we are committed to technological innovation, high-quality service, and customer satisfaction. We aim to build long-lasting partnerships with clients around the world by providing them with top-notch EMI filters and transformers designed to reduce noise, enhance performance, and ensure the smooth operation of electronic systems.
Our Mission: To provide efficient EMI and power quality solutions that enable the safe and reliable operation of electronic systems worldwide.
Why choose our products
Choosing DOREXS products, you will be guaranteed by 15 years of manufacturing experience. We have a professional R&D team, advanced production lines and strict quality control to ensure that our products meet international standards such as UL, CE, ROHS, ISO9001, etc. Our EMI filters and transformers have excellent performance and can provide customized solutions. They are widely used in many fields such as industry, medical, and home appliances. We are committed to providing customers with efficient and reliable products and technical support to help you improve the stability and performance of your equipment.
If you want to know more about DOREXS or customize products, please contact our team!


Our Services
At DOREXS, we not only provide high-quality EMI filters and transformers, but also provide comprehensive service support. Our services include:
- Technical Consulting and Support: Our professional team is always available to provide you with selection advice, technical questions and usage guidance to ensure that the products work best in your application.
- Customized Solutions: According to the specific needs of customers, we provide tailor-made EMI filter and transformer designs to meet various special application scenarios.
- Fast Delivery and Supply Chain Management: Our efficient production process and flexible supply chain management ensure on-time delivery of standard and customized products.
- After-sales Service: We provide after-sales technical support and maintenance services for all products to ensure that your equipment is always in good working condition.
DOREXS is committed to building long-term partnerships with customers and contributing to your business success through excellent service.
Contact Us
If you have any questions about DOREXS products or need technical support, please feel free to contact us. We will be happy to help you!
Company Name: Chengdu DOREXS Electronics Co., Ltd.
Address: China, Chengdu, Sichuan Province
Whatsapp: +86 18117837140
Email: lijun@dorexs.com
Whether it is product consultation, customization requirements, or technical support, our team is always ready to provide you with quality service.

Application
Home Appliances
DOREXS' EMI filters and transformers can effectively suppress electromagnetic interference in home appliances, ensuring stable operation of equipment such as washing machines and air conditioners, improving energy efficiency and extending service life, while providing reliable power conversion and voltage regulation.
Industry
DOREXS's EMI filters and transformers are widely used in industrial equipment. They can effectively suppress electromagnetic interference, improve equipment operation stability, protect sensitive electronic components, and ensure high efficiency and reliability of power conversion. They are suitable for automation systems, mechanical equipment and power management fields.
Medical
DOREXS' EMI filters and transformers are essential in medical equipment. They can effectively reduce electromagnetic interference, ensure precise equipment operation and patient safety, while providing stable and reliable power conversion. They are widely used in key medical devices such as MRI, ultrasound machines and life support equipment.

Common Problem
What is an EMI filter, and why is it important?
An EMI (Electromagnetic Interference) filter is a device designed to suppress unwanted electromagnetic interference that can disrupt the normal operation of electronic equipment. It is crucial because EMI can cause malfunctions, reduce equipment lifespan, and lead to performance issues in sensitive electronics. By using EMI filters, you can protect your devices, improve their reliability, and ensure compliance with international electromagnetic compatibility (EMC) standards.
What industries can benefit from using your EMI filters and transformers?
Our EMI filters and transformers are widely used across various industries, including industrial automation, medical equipment, aerospace, consumer electronics, telecommunications, and military applications. Any industry that relies on electronic systems that need to operate reliably in environments prone to electromagnetic interference can benefit from our products.
Can you customize EMI filters or transformers to meet specific requirements?
Absolutely. Our experienced R&D team can work closely with you to design and develop customized EMI filters and transformers tailored to your specific application and operational needs. We specialize in creating solutions that address unique challenges in various industries.
Do you provide technical support after purchasing your products?
Yes, DOREXS is committed to providing ongoing technical support. Whether you need assistance with installation, troubleshooting, or understanding how to get the best performance from our products, our team is here to help ensure that your systems run smoothly.