1 DRY FILM PHOTOPOLYMERS, STRIPPERS, DEVELOPERS, AND ANTIFOAMING AGENTS; FOR USE IN THE MANUFACTURE OF ELECTRONIC PARTS; PLATED THROUGH HOLE PROCESS CHEMICALS; NAMELY, ELECTROLESS COPPER PLATING BATHS, CLEANERS, ACTIVATORS, CONDITIONERS, AND ETCHBACK/DESMEAR CHEMICALS FOR USE IN THE MANUFACTURE OF ELECTRONIC PARTS; NAMELY, PRINTED CIRCUIT BOARDS; DIAZO ARTWORK FILMS FOR USE IN THE MANUFACTURE OF ELECTRONIC PARTS; NAMELY, PRINTED CIRCUIT BOARDS; UV CURABLE SCREEN RESISTS FOR USE IN THE MANUFACTURE OF ELECTRONIC PARTS; NAMELY, PRINTED CIRCUIT BOARDS; THERMALLY-CURED SCREEN RESISTS FOR USE IN THE MANUFACTURE OF ELECTRONIC PARTS; NAMELY, PRINTED CIRCUIT BOARDS; PHOTOIMAGEABLE SOLDER MASKS; NAMELY, DRY FILM SOLDER MASKS, COMPOSITE DRY FILMS AND LIQUID SOLDER MASKS FOR USE IN THE MANUFACTURE OF ELECTRONIC PARTS; NAMELY, PRINTED CIRCUIT BOARDS; SEMICONDUCTOR CHEMICALS; NAMELY, NEGATIVE AND POSITIVE WORKING RESISTS, DEVELOPERS, STRIPPERS AND BACKUP COATINGS FOR USE IN THE MANUFACTURE OF ELECTRONIC PARTS; NAMELY, PRINTED CIRCUIT BOARDS