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September 1999

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Subject:
From:
Jim Douglas <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 10 Sep 1999 13:06:30 +0100
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Albert

Herewith contact for Cuprammonium Sulphate

ELO-CHEM Recycling Anlagenbau GmbH
Lippertreuter Str. 7
D-88682 Salem-Rickenbach

tel: +49 7553 7051 / Fax: +497553 7052

email 1 [log in to unmask]
email 2 [log in to unmask]

Contact Christian Bernauer

 Note that Rudy has different experiences to our own.
However it all depends on solution conditions and etch machine etc.
Our process etches faster than ammonium chloride with better undercut.

Jim Douglas
----------
From:   Albert Mok[SMTP:[log in to unmask]]
Reply To:       TechNet E-Mail Forum.
Sent:   10 September 1999 03:06
To:     [log in to unmask]
Subject:        Re: [TN] Ammoniacal vs Cupric chloride Etcher.

Dear Jim,

I am interested to know where and how we can acquire the information for
ammonium sulphate etching system is etching faster than that of ammonium
chloride.



>
>Jim Douglas
>Kam Circuits
>
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Albert Mok

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