Ye Han Co., Ltd. was established in 1992. We have been committed to producing and designing network related components, such as LAN components ( pulse transformers and LEDs included in RJ-45 ), pulse transformers, and DC-DC converters . We have passed ISO 9001, ISO 14001, IATF 16949 , QC080000 and SONY's GP certification to prove that we have the best quality and efficiency management. In addition, excellent quality verification systems and production capabilities enable us to meet customer design and manufacturing service requirements. With its lean operation model (through integration of automation and supply chain, and e-management platform to improve operational efficiency and speed up decision-making), Liaohan continues to provide the best quality and most competitive network-related components and DC-DC converter and other products with excellent service.