How to judge good PCB prototypes supplies?

From:http://www.htdcircuits.com/top-4-factors-effect-chooses-your-pcb-prototypes-supply--quickturn-pcb-100.html

This post topic is PCB prototypes.
You know the PCB prototypes are very special kind of printed circuit board.
If you have noticed our prototype PCB article before.
You must get this point.
But today we want to share the unique type attribute.

We will share some tips related to PCB prototypes.
To order the high quality PCB Prototypes.
Most PCB companies compare several PCB manufacturers.
Then choose the ideal as PCB supply.

If you want to choose the largest PCB-Prototype suppliers.
You may pay PCB prototypes for more money.
Because they always charge so high with PCB prototypes.

And the second is the guarantee of the prototypes.
You know the PCB prototype is very special products.
Even you have rich experience China PCB making.
But you can't judge the bad PCB prototypes immediately.
So let you PCB prototypes supply to guarantee is necessary.
In fact most PCB prototype fabrications values the importance of the order and guarantees minimum lead time for delivery.

Then is the PCB prototypes kind type.
Some of the circuit board manufacturers may just allow you to order few types.
Even you were the old customers to them.
Also supply you the simple PCB type.
If you just need the simple PCB type, It's OK.
Or you had better to find another PCB supplier.