FR-4, metal core and high-frequency fabrication, with turnkey assembly and stencils on all of them quoted from the same line in Delhi NCR.
The default build for most electronics: 1 to 12 layers of FR-4 laminate, TG130 to TG170. Built on the same standard line whether you need five prototypes or fifty thousand panels.
Aluminium or copper base for boards that need to move heat, not just signal.: LED lighting, power conversion and motor drivers.
Rogers laminates for RF and microwave designs where dielectric constant has to hold accross the panel.
Turnkey, partial, or consigned SMT and through-hole assembly on the same floor that fabricates the baord, with X-ray on every BGA and QFN.
Laser-cut, electropolished stainless stencils matched to your CPL, dispatched alongside your board order so assembly can start the same day.