HDI boards has the are 6 different types of HDI boards, through vias from surface to surface, with buried vias and through vias, two or more HDI layer with through vias, passive substrate with no electrical connection, coreless construction using layer pairs and alternate constructions of coreless constructions using layer pairs.

We products PCB and PCBA for our customers working in frequency ranges from LED products to communication，equipments and in industries as diverse as Medical devices through to automotive, aerospace and etc PCBA products.

E-SUN has been designing and manufacturing PCBA for a The field of high speed rail has progressed significantly with the addition of on-board monitoring PCBA to check the status and safety of trains, reduce maintenance costs and improve passenger comfort and safety.

PCB Board ESUN have produced are mainly used in the Industrial Control, Medical Treatment, Automobile area,LED lighting,communication,aviation and so field on.All PCBs are ISO9001, ROHS, UL certificate and meet the international IPC standard.

Medical PCBs tend to be specialized high-density interconnect PCBs that will stimulate the growth of high-density interconnect (HDI) PCBs in the market.All PCBs are ISO9001, ROHS, UL certificate and meet the international IPC standard.

Medical applications of electronic devices continue to progress with the development of electronic technology, becoming more efficient and dense, leading to endless new possibilities.All PCBs we provide are ISO9001, ROHS, UL certificate and meet the international IPC standard.