B.Grimm – the longest-established company in Thailand
Established in the reign of King Rama V, B.Grimm today is Thailand's oldest company with a long and distinguished history of "doing business with compassion". From its beginning in 1878, B.Grimm was based on creating value for society — starting with the opening of Siam Dispensary to provide modern Western medicines to Siamese people, and later the Royal Court. It also created a significant infrastructure in 1888 with the building of 1,500-km long Rangsit canal, Southeast Asia's largest irrigation system at the time, and much more.
Source: bangkokpost.com