If you have already entered the account, click quote now. And then upload the Gerber Files
The following is an example of a PCB that I have ordered from JLCPCB with a red double layer masking PCB, HASL (with Lead) surface finish.
Schematic LM1876 Quad Amplifier PDF
Gerber Files Power Amplifier Quad LM1876 High-End Audio
Bill of Materials Quad Gainclone Amplifier LM1876 .CSV