Frameless stencil without aluminum frame, the dimensions equal to the valid area.

Please make sure your PCB size is within the valid area. Especially, the stencil size should be at least twice the PCB size of the option "Top and Bottom".

The option "Top and Bottom" means both are on the same stencil.

The quantity of stencils you require.

Fiducial Mark is designed to help the SMT placement machine to check the location.

BGA plating is also called Electropolishing. If your board has BGA, we highly recommend you to choose BGA Plating.