commodities—including rubber, copper, and zinc—on the Shanghai Futures Exchange all ranked first globally. By the end of 2017, Shanghai had 1,491 financial institutions, of which 251 were foreign-invested. In September 2013 with the backing of Chinese Premier Li Keqiang, the city launched the China (Shanghai) Pilot Free-Trade Zone—the first free-trade zone in mainland China. The zone introduced a number of pilot reforms designed to incentivize foreign investment. In April 2014, The Banker reported that Shanghai "has attracted the highest volumes of financial sector foreign direct investment in the Asia-Pacific region in the 12 months to the end of January 2014". In August 2014, fDi magazine named Shanghai the "Chinese Province of the Future 2014/15" due to "particularly impressive performances in the Business Friendliness and Connectivity categories, as well as placing second in the Economic Potential and Human Capital and Lifestyle categories". Manufacturing As one of the main industrial centers of China, Shanghai plays a key role in domestic manufacturing and heavy industry. Several industrial zones—including Shanghai Hongqiao Economic and Technological Development Zone, Jinqiao Export Economic Processing Zone, Minhang Economic and Technological Development Zone, and Shanghai Caohejing High-Tech Development Zone—are backbones of Shanghai's secondary sector. Shanghai is home to China's largest steelmaker Baosteel Group, China's largest shipbuilding base Hudong-Zhonghua Shipbuilding Group, and one of China's oldest shipbuilders, the Jiangnan Shipyard. Auto manufacturing is another important industry. The Shanghai-based SAIC Motor is one of the three largest automotive corporations in China, and has strategic partnerships with Volkswagen and General Motors. Tourism Tourism is a major industry of Shanghai. In 2017, the number of domestic tourists increased by 7.5% to 318 million, while the number of overseas tourists increased by 2.2% to 8.73 million. In 2017, Shanghai was the highest earning tourist city in the world, which is expected to maintain until 2027. As of 2019, Shanghai had 71 five-star hotels, 61 four star hotels, 1,758 travel agencies, 113 rated tourist attractions, and 34 red tourist attractions. The conference and meeting sector is also growing. According to the International Congress and Convention Association, Shanghai hosted 82 international meetings in 2018, a 34% increase from 61 in 2017. Free-trade zone Shanghai is home to China (Shanghai) Pilot Free-Trade Zone, the first free-trade zone in mainland China. , it is also the second largest free-trade zone in mainland China in terms of land area (behind , which covers the whole Hainan province) by covering an