Inquiry (采购产品): Brass-tarnishing I am helping a charitable organization that has brass plaques naming a memorial placed under gift trees. The plaques tarnish. Would you tell us what is the best treatment to retard the tarnish and weathering. Would a spray shellac be helpful? If so, any particular product? Your experience on this concern would be much appreciated. Bob Chapman - bchap10@msn.com **** Hidden Message ***** Bob Chapman Society 966 Rudy Rd. Freeport, IL 61032 USA Company: Friends Forever Humane Phone: 815-232-5269 E-mail: bchap10@msn.com **** Hidden Message ***** bchap10@msn.com