Dear Sirs,

First of all, let me introduce my company and myself.
We are a pcb manufacturing company, called "CIPSA", and I am the Quality
Manager. We are a company of 50 people and we produce pth pcb's and we are
beginning to produce multilayers pcb's.
The reason why I would like to put in contact with your organisation is
because, lastly, we are having problems in the developing department. From
time to time, we find out that a lot of tracks in the pcb are damaged or
etched, doing like a little half-spheric hole. It occurs specially in the
perimetre zone of the track.
We think that it can be caused because of possibles products of developing
such as anti-espumants ("anti-bouble"?) or others products, that remains on
the board, because the rinse of our Schmid developing is not effective.
Could you tell us if we are right ??
Is there another possibility ??

Thank you in advance for your colaboration.


                                                Albert Varón.


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