HATJR – MAINTENANCE AND CONSTRUCTION SERVICES CORPORATION is a duly registered company with the Security Exchange Commission, which holds office at R. Lazaga St., Balibago, Sta. Rosa City, Laguna.
The Company is headed by a group of officers, who has proven track record of expertise in the operation, maintenance and construction of various Power, Distillation, Industrial Plants and Equipments.

The Personnel handling the affairs of the company have more than 15 years experienced in the Cryogenics, Power, Gas and industrial plants operation, maintenance and construction; Design, build, supply, maintain, operation and installation of cooling tower, cryogenic piping, Water purification system, Air conditioning system, conveyor and fabrication activities.
They are also licensed engineers and some of them have units in Masters of Technology & Engineering Management, and one of them is a Professional Mechanical Engineer (PME).