In 1975, the late Tan Khai Hee founded Hai-O Group which specializes in selling products from China, such as traditional Chinese medicine, medicinal wine, health care products, tea, and so on. He actively promoted business collaborations between Chinese entrepreneurs in Malaysia and China and exchanges among citizens of the two countries. In 1992, he co-founded Malaysia-China Friendship Association with Wan Osman Wan Awang, a renowned Malay poet and Malaysian National Laureate. Their commendable effort had garnered support from The Associated Chinese Chambers of Commerce & Industry of Malaysia and played an indelible role in strengthening Malaysia-China relations.

