Inquiry (采购产品): DOUBLE WALL AMMONIA/WATER HEAT EXCHANGERS Do you make double wall ammonia to potable water heat exchangers? Tui used to make them but they did not hold up. Thanks, Russ Ryken russ.ryken@tyson.com **** Hidden Message ***** Russ Ryken Dakota Dunes, SD 57049 USA Company: Tyson Foods, Inc. Title: Refrigeration Engineering E-mail: russ.ryken@tyson.com **** Hidden Message ***** russ.ryken@tyson.com