why mechanical drilling frame is import for cnc router table

why mechanical drilling frame is import for cnc router table ? more and more buyer want to mechanical drilling frame instead of handing drilling,
but 80% chinese cnc machine is hand drilling at factory, razortek cnc router with all mechanical drilling won more and more clients'  favor.

all razortek cnc router machine with blueprint drawing ,so we can use 5 axis cnc machine drilling our frame, gantry etc.
razortek only produce high quality machine.