Thai Rungruang Group Its origins began during World War II. At that time, Thailand was experiencing a sugar shortage crisis, although the government had a policy to encourage private companies to establish sugar factories to solve the crisis. But most of the private sector still faces problems with the cost of machinery and various equipment that must be ordered from abroad, which are very expensive, while Ms. Suree Atsadatorn has knowledge and ability in the field of mechanics. Able to successfully produce rare and expensive equipment parts for sugar production. Therefore, "Ruam Kam Lap Company Limited" was established on May 7, 1946, in the area of Soi Phrom Phong. Along Saen Saep Canal Bangkok This is considered to be the first private sugar factory in Thailand.