... massage at the first time4.delivery in time Working principleChannels are formed between the plates and the ... district cooling, swimming pool heating, solar heating, Material of PlateSuited Liquid KindsStainless Steel (SUS304.316 Etc)Pure Water, ... D205, B2G)Concentration Sulphuric Acid, Hydrochloric acid, Phosphoric acidMaterial of GasketOperating Temperature ° CSuited Liquid KindsNBR-15~+135° CWater, ...