burnishing by abrasion; grinding; burnishing by abrasion; framing of works of art; sandblasting services; soldering; metal plating; metal treating; laser scribing of metal; metal casting; sorting of waste and recyclable material; custom assembling of materials for others in the nature of bindery services, namely, collating, folding, stapling, perforating, cutting and binding and printed materials; millworking; electroplating; metal refining services, namely, gold and silver refining