The large-scale conglomerate is active in healthcare, energy, building and industrial systems, real estate, e-commerce, and transport; with 22% annual growth in recent years.

[2][3] B.Grimm was founded in 1878 when German pharmacist Bernhard Grimm and his Austrian partner, Erwin Mueller, started a chemist's shop, the Siam Dispensary, on Oriental Avenue off New Road.

[4] The shop, one of the earliest incorporated businesses in the country, prospered and it was soon appointed official pharmacist to the Thai royal family.

After King Chulalongkorn returned from his grand tour in Europe, he began putting in place measures to modernize the country to bring it more in line with European nations.

[6] Following the outbreak of World War I, all of the assets in Siam (then Thailand) of Adolf Link, a German national, were seized on orders of the British government and was sent with his wife, Erma, and their two children, Herbert and Gerhard, to concentration camps in India.

In 1928, Prince Bhanurangrsi built on his property the new premises for the company at Wang Burapha, and King Prajadhipok and Queen Rambhai Barni presided over the opening of the new offices.

[6] Herbert Link reopened the company in Thailand in 1949, while brother and partner Gerhard remained in Germany to help expand the B.Grimm name in Europe.

In 1975, Herbert's wife, Alma, was bestowed the title of Khunying (equivalent to 'Dame') by the King Rama IX in recognition of her work for various charitable foundations.

[1] B.Grimm Green Power, majority owned by B.Grimm in a joint-venture with STRR Engineering Co., Ltd., produces biodiesel in Chumphon Province.

Other partnerships include Siemens Limited, a leader in electrical engineering; Hamon, a leader in cooling towers for power plants; KSB Pumps, which provide pumps for energy-related industries, and B.Grimm Trading Corporation, supplying energy equipment to industries and buildings.

[18] The company is a distributor of foreign healthcare devices through partnerships with Merck, Getinge, Siemens, and Carl Zeiss.

[22] On the 12 October 2016, Her Royal Highness Ashi Kesang Choden Wangchuck of Bhutan agreed with B.Grimm to establish the Gross National Happiness Centre of Thailand.

A key mission of the centre is to "pursue and achieve collective happiness by building a more peaceful, sustainable and harmonious world.