what documents should I send if I need a PCB or PCBA quotation?

For PCB , we need your design files contains XY data and D-code embedded in. it’s best to provide design gerber with RS-274X file format. Other file format designed by CAM350,Genesis, Altium, Protel, P-CAD, Eagle is OK .such as .cam/.dwg/ .dfx/.gbr /.pcb/pcbdoc is OK.

For PCBA, you need to provide PCB design files, BOM files(Bill of Material),Pick and Place file