Seungil Electronics was founded in 1987 and as a specialist in the HVAC field, has been providing the finest quality products such as Electrode steam humidifiers, Configurable controllers, HVAC transmitters and Monitoring systems.
POLYBLOC, pioneer in advanced heat recovery systems, has been producing heat exchangers since 1982.
After years of continual growth POLYBLOC has become one of the leading manufacturers for applications of very high standards, i. e. highest efficiency, very high compressive resistance as well as temperature and corrosion resistance.
POLYBLOC offers a wide range of products which are tailored to the requirements of customers
in an optimal way.
Founded in 1976, Neptronic is a private corporation that designs, manufactures and distributes products for the HVAC industry. Our product line includes intelligent controllers, electronic actuators, actuated valves, humidifiers and electric heaters.