... parts by ourselves such as circuit boards, furnaces, water tanks and so on. Although it increases costs, we ... (Baltur), sensitive leakage protection switch (DELIXI), fully-automatic water softener (Controller from FLECK/AUTOTROL, U.S.A), etc ... U.S.A)Stainless Steel Hot Water TankCarbon Steel Hot Water TankStainless Steel Cold Water TankGas-distributing CylinderWater CollectorWater DivisionSteel ...