It has signed the MoU with Capital Airports Holding Company (CAH), the operator of the world's second busiest airport and biggest gateway in China.
The MOU paves the way for a new period of "extensive collaboration" between Stockholm Arlanda Airport and Beijing Capital International Airport.
Stockholm Arlanda Airport is the only Nordic airport being served by a Chinese carrier, Air China, which in 2013 celebrated 25 years of serving the Swedish gateway.
According to Swedavia, passenger numbers between Beijing and Stockholm have grown ten times faster than other international passenger growth at Arlanda during the last 15 years.
The phenomenal growth was one of the reasons why Scandinavian airline, SAS, inaugurated a direct route to Hong Kong from Stockholm last September.
Capital Airports Holding Company states that it attaches great importance to the sister airport relationship with Swedavia, and claims that it is willing to learn from its "rich experiences" of operating a green airport, sustainable development and airport management from the counterpart.
"Through the bond of sisterhood , the two sides will bring closer ties, enhance mutual trust and deepen friendship to open a new chapter for future cooperation," says CAH's president and CEO, Liu Xuesong.
"We are looking forward to extending our already strong connections with China by adding this sisterhood relationship with the largest airport operator in China," enthuses Karl Wistrand, Group CEO at Swedavia.
"It will give great opportunity for increased connectivity between our countries in both business and leisure traveling.
"As environmental industry leaders, we are hoping to be able to share best practices from our work on how to become a sustainable airport.
"It will also be beneficial for Arlanda to get Beijing Capital International Airport’s insights on airport infrastructure and a competitive airport city development."