Established in 1986, Tong Thern is one of the earliest seafood companies in Taiwan and also founding company of TT group. Its businesses ranged from automobile/motorcycle service parts manufacturing, motorcycle manufacturing, food service, fruits and food (seafood) international trading. With automobile and mechanical division moved to mainland China as Chongqing Tong Jian Industry Co. Ltd., Tong Thern had been able to put its focus on food and seafood industry. One of its major business is Salmon marketing in Taiwan, China and Vietnam, and Tong Thern has channels in these countries for fresh chilled G&G salmon, frozen salmon fillets, frozen smoked salmon and all other kinds of salmon products. It is also the marketing representative of premium brand New Zealand King Salmon Company.

Established shortly after Tong Thern, in 1989, Hong Beng began its focuses from sourcing air-flown fresh fish into Taiwan market. It has now grown to have 200 channels in China, Taiwan, Hong Kong, Dubai, Vietnam and Indonesia, and 1000+ suppliers from 40 different countries.

Established in 1997, International Top Marine markets all kinds of frozen seafood from fish, crusteans to cephalopods.

Established in 2014, TT group’s own on-line service provides all kinds of ready-to-eat products and processed seafoods for consumers and also food service channels.

TT group's mainland China business started as early as 1990. And in 2016, Shantou office was established to manage and better serve its mainland accounts, distributions and HR.

Besides Hong Kong market distribution, Hong Kong office was also establised, in 1997, as a logistic and financial sector for the group.