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.