Goldenway's GWFX logo was splashed on the Swans' shirt last season after agreeing the club's biggest ever shirt sponsorship deal, thought to be worth £2m - double their previous best.
Now the club have claimed they have topped that by revealing they have extended their partnership with the Hong Kong-based financial exchange company.
The Swans release their new shirts for the new season this weekend with the GWFX and a 24k.hk logo set to adorn the Adidas strip.
And the club have also revealed that talks are planned for a future Asian tour as they look to build on the Far East profile gained by their three seasons to date in the Premier League.
Swansea vice-chairman Leigh Dineen said: “We are excited and delighted to extend our partnership with Goldenway for another two seasons and announce the biggest sponsorship deal in the club’s history.
“We have developed an excellent working relationship with Goldenway over the past 12 months that has been extremely beneficial to both parties.
“We are not only honoured to be backed by one of the world’s fastest growing financial services providers, but their prestigious presence throughout Asia has helped lift the club’s global brand to a whole new level.’’
Goldenway Investment General Manager, Brian Tsui, added: “I am proud that Goldenway, as a brand, is growing its portfolio of sports sponsorship globally.
“It is a valuable relationship with Swansea City. The association with such a passionate football club will definitely enhance our brand value and create a positive impact in driving our expansion globally.
“We look forward to an even more successful seasons working together.”