United Machinery Company Limited was established on June 7, 1956 by Mr. Choosakdi Chittkusol, the late founder who assumed the position of Chairman of the Board of Directors. At present, the company is managed by Mr. Patpong Chittkusol, the Managing Director. 

To operate the business of trading in imported products
In the early years, the company was involved in importing and supplying superior quality products in the categories of water pumps, electricity generators, machinery and tools, to both the government and the private sectors. Through the decades, the company has firmly committed to the corporate management principles based on integrity and good governance, emphasizing honesty towards clients and consumers, reliability of product quality, and satisfaction in after-sales service.
Corporate Social Responsibility

United Machinery has thus prospered, continuing to win respect from all its stakeholders and the public at large. In addition, the company is constantly engaged in corporate social responsibility and charitable activities.

On October 12, 1983, a Royal Garuda Emblem was bestowed upon the company by Royal Appointment of His Majesty the King in recognition of its continuous contribution to the Thai economy and society.