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* [http://www.megauk.com/cgi-bin/mega/datasheets.pl All Mega MSDS and data sheets] | * [http://www.megauk.com/cgi-bin/mega/datasheets.pl All Mega MSDS and data sheets] | ||
* [http://rdchem.com/chemical-milling.html Maintaining ferric chloride etchant] | * [http://rdchem.com/chemical-milling.html Maintaining ferric chloride etchant] | ||
[[Category:PCB making]] | |||