1957Experimental research into thermoelectric semiconductors began at Komatsu Ltd. 1959Marketing of thermoelectric cooling applied equipment (Photomul cooling equipment for astronomical telescopes) was begun. 1960Komatsu ......1957Experimental research into thermoelectric semiconductors began at Komatsu Ltd. 1959Marketing of thermoelectric cooling applied equipment (Photomul cooling equipment for astronomical telescopes) was begun. 1960Komatsu Electronics Inc. was established. The research and development division of Komatsu Ltd. became an independent entity to commence production of thermoelectric cooling semiconductor materials and production and sales of cooling Thermo-Panels and its applied equipment. 1963The COOLNICS Series was developed and preparations for its mass marketing were completed. 1966Japan Solidate Co,.Ltd. was established. It separated from Komatsu Electronics Inc. and became an independent exclusive manufacturer specialized in electronic refrigeration equipment. 1967Company name was changed to Komatsu Solidate Co,.Ltd. 1970Sales of Thermoelectric Isothermal Bath and Zero-Con started. 1971Sales of Thermoelectric Dehumidifiers for gas analyzers started. 1972Company name was changed to Komatsu Electronics Inc. It became a 100%-owned subsidiary of Komatsu Ltd. 1975Sales of multi-purpose Thermo-Modules started. 1976Sales of micro Thermo-Modules started. 1982Construction of the factory was completed. 1983Sales of the Chemical Circulator series for silicon wafer wet processing stated. 1985Mass production facilities for multi purpose Thermo-Modules were installed. 1988Mass production of micro Thermo-Modules using the hot press method started. 1989Robots for assembly of micro Thermo-Modules were adopted. 1991Construction of the new factory was completed and part of the production facilities were moved there. Sales of CS-Heaters and Multi-Controllers started. 1992Sales of DI-Water Heaters started. 1994The award for our outstanding "Proactively" was presented from Northern Telecom. 1995Sales of Precise Air Conditioning Units started. 1999Sales of re-circulating heating and cooling units started. ISO9001 was certified. 2000ISO14001 was certified. Sales of Coolbit started. 2002Sales of Mini-TEC started. 2005Sales of Compact Multi-stage Module started. 2008Company name was changed to KELK Ltd.