HANSEO PRECISION METER CO., LTD. IS… HANSEO Precision Meter Co., Ltd. Is a total energy management system company, equipped with production systems such as design, die and mold making, casting, injection molding, and machine work, which manufactures digital water (hot water) meters, integration calorimeters, flow meters, and wire/wireless remote meter reading systems (for public offices and apartments). We sincerely do our best everyday not jst to satisfy but to move the hears of our customers as well as to prepare for the future.