Medical Diagnosis Device Medical Equipment PCB Circuit Board 4 Layers ENIG Surface

Established in 1999, Lefang owns 3 modern Printed Circuit Board factories in Guangdong, China.

We provide One-stop solution for PCB & PCBA manufacturing to our customers home and abroad.

High quality PCB products, competitive price, on time delivery, after-sale service are always offered.


To make the continued progress, we try our best to in every section, including selecting quality raw materials

strictly, imported advanced automated equipments, employing 70 experienced engineers, acquiring global

certification of ISO9001:2008, ISO14001:2004, ISO/TS16949:2009, UL, QC080000, OHSA18000, etc.


Our customers' industry come from Communication, Industrial Control, Automotive, Medical Equipment,

Security Apparatus, Consumer Electronics and LED Lighting.


We sincerely pursue win-win business with customer all the time!

Now send us your inquiry, and you will be replied within 8 hours!

Size and quantity of the PCB hole

The PCB cost of the hold drilling is mainly depended on the hole diameter, drilling speed and error value. In the process of the PCB Board hole drilling, it will take a higher cost when the hole is smaller. And we suggest the hole size should be no less than 0.3mm.In addition, as for the aperture ratio, our suggestion is between 1/6 to 1/5. Because the PCB hole will be damage if the aperture ratio less than 1/8, which will increase the scrap rate. In the meanwhile, the more drilling hole in the PCBs, the higher cost will be taken place.