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Chemical coating agent for use in the manufacture of printed circuit boards; chemical plugging agent for use in the manufacture of printed circuit boards; chemical resistant material for plating in the nature of chemicals, namely, corrosion inhibitors for use in the manufacture of plating; chemical resistant material for plating, namely, chromium plating compositions, chemical compositions for metal plating; unprocessed plastics for industrial use; plastic adhesives for industrial purposes; adhesives for industrial purposes