1. IPC –Learn more about the industry association for printed circuit board and electronics manufacturing service companies, their customers and suppliers

2. Electronics Lab–You can find useful printed wiring circuits with full description, diagrams and PCB, electronics articles, links and downloads.

3. SMTnet-Electronics industry web portal covering Surface Mount Technology, PCB assembly, EMS process from concept to delivery – FREE resource for individuals and companies.

4. EverythingPCBThe Printed Circuit Board Product, PCB fabrication, includes Aluminium Metal core pcb and Ceramic PCB Service and Resource Guide Serving the industry since 1999.

5. Normal materials datasheet, please visit the following official websites.