Trina, which established its Singapore regional head office last year, said it provides management functions covering administration, sales, project development, R&D, logistics and purchasing operations. ReneSola Ltd, a leading global manufacturer of solar photovoltaic (PV) modules and wafers, said the new office will also drive sales and business development for the company in Asia, the Middle East and Africa. Europe's Saint-Gobain Solar, which designs, manufactures, distributes and markets building materials and solutions for housing, said it has started a Singapore office to drive sales in the region. Nicolaj Dahl, the company's commercial director for Southeast Asia and the Pacific, said: "Our entry into South East Asia & Pacific is a natural move for our business. Solar energy has an increasingly important role to play in energy generation.