PSA International Pte Ltd, formerly Port of Singapore Authority is the largest port operator in the world.
PSA has a network of more than 20 port projects over 11 countries in Singapore,China, Europe, India, South-Korea and Japan. It owns also 25 container terminals in Asia, Europe and Latin America.

From 2002 up till today, ZINGA has been applied on more than 30 lighting masts. Each lighting mast is 45 meters high.