... Appearance Colorless, No turbid Odor, No Strange Stench 3. Packing: Cylinder Specification: Disposable steel cylinder 30b/13 ... , freeze dryer, cold storage, food, refrigeration equipment, Marine refrigeration equipment, industrial refrigeration, commercial refrigeration, refrigeration condensing units ... supermarket display cabinet and so on refrigeration equipment, etc., (3). Also a lot of used for PTFE ...