- SIAM-JUSCO, WANG-HIN BRANCH, SERVICE CONTRACT OF AIR CONDITIONING SYSTEM (2 sets of centrifugal water cooled chiller 200 TR, 3 units of chilled water pump, 3 units of condenser water pump, 3 units of cooling tower and 10 units of air handling unit); 2003-2004
- SIAM-JUSCO, BANG-BON BRANCH, SERVICE CONTRACT OF AIR CONDITIONING SYSTEM (5 sets of central split type units 30 TR); 2003-2004
- MUANG-THAI LIFE ASSURANCE BUILDING (RAJCHADAPISEK RD.) SERVICE CONTRACT OF AIR CONDITIONING SYSTEM (4 sets of screw water cooled chiller 200 TR); 2003-2005
- TETRAPAK BUILDING, PRAKANONG, SERVICE CONTRACT OF AIR CONDITIONING SYSTEM (3 sets of central water chiller 340TR, 3 units of chilled water pump, 3 units of condenser water pump, 3 units of cooling tower and 13 sets of air handling unit); 2005-2006
- WYNCOAST INDUSTRIAL PARK (PUBLIC) CO., LTD., FACTORY AT BANPAKONG, CHACHEANGSAO, SERVICE CONTRACT OF AIR CONDITIONING SYSTEM (4 sets package water cool, 18 units split type) ; 2005-2006
- BANK OF AYUDHYA, RAMA III HEAD OFFICE : TRANING CENTER 16th FL , SERVICE CONTRACT OF AIR CONDITIONING SYSTEM (Variable Refrigerant Volume system) ; 2005-2007
- BANK OF AYUDHYA, RAMA III HEAD OFFICE : FOREIGN BANKNOTE ON BASEMENT 1 , SERVICE CONTRACT OF AIR CONDITIONING SYSTEM (Variable Refrigerant Volume system) ; 2005-2007
- THAI LIFE INSURANCE, RATCHADAPISEK ROAD, HEAD OFFICE : FRONT BUILDING, MAINTENANCE CONTRACT FOR AIR CONDITIONING SYSTEM UNDER TAIKISHA ; 2007
- BUPA CROSS, SATHORN ROAD, BANGKOK : MAINTENANCE FOR AIR CONDITIONING ; 2007-2014
- WISMA ASIA, RAMA 4 ROAD, BANGKOK : MAINTENANCE OF AIR CONDITIONING FOR SERVER ROOM ; 2012-2014
- TOTAL E&P THAILAND (HEAD OFFICE) : MAINTENANCE OF AIR CONDITIONG SYSTEM FOR SERVER ROOM ; 2014
- PAOLO MEMORIAL PHAHOLYOTHIN : MAINTENANCE OF CHILLER PLANT MANAGEMENT SYSTEM (CPMS) , BUILDING 1 & 4 ; SINCE 2015-2019
- THE INSTITUTE OF PUBLIC RELATION : MAINTENANCE OF AIR CODINTIONING SYSTEM ; SINCE 2018-PRESENT
- KiddyKare International Kindergarten : MAINTENANCE OF AIR CONDITIONER – SPLIT SYSTEM ; 2020
- BENCHAKITTI PARK HOSPITAL : MAINTENANCE OF AIR CODITIONING SYSTEM – SPILT TYPE 334 SETS ; 2021