1. What is PCB and PCBA production? PCB is printed circuit board, each electronic product have pcb inside; PCBA is load many components on printed circuit board, then the products have different functions. PCB and PCBA are semi-products, so it is 100% customized. 2. How to ask PCB and PCBA quotation? Gerber file and BOM list are necessary. Schematic is also ok. 3. Where to get these files for quotation and production? From any of your hardware engineer/designer. 4. Does my files are safe after I send to you if not ordered? Yes. All quotation files are confidential,we'll delete it after one month if not ordered. 5. What is your new customer policy? All customer's first order are free shipping. 6. What is the products warranty? One Year after production.