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Chongqing International Expo Center stands in Yuelai Convention and Exhibition City, the core of Chongqing's Liangjiang New Area, at 66 Yuelai Avenue in Yubei District, with Yuelai old town to the north, the Jialing River to the west and a rolling exhibition park to the east. Invested in by Chongqing Yuelai Investment and Development Co., Ltd., a municipal state-owned enterprise under the SASAC, and opened in 2013, it was billed at completion as a top-ten venue worldwide, second in China and the largest in western China, and remains the city's principal venue for large exhibitions and a symbol of Chongqing's inland opening-up. The complex has 600,000 square metres of floor area and 200,000 square metres of indoor exhibition space in 16 fully level, pillar-free halls, eight on the north side and eight on the south, each with 11,500 square metres of usable area and floor loading of three to five tonnes per square metre so that heavy equipment can drive straight in; outdoor space and 11,000 parking spaces complete the exhibition zone. Between the two hall clusters, a 20,000-square-metre multipurpose hall with a clear height of 19 to 28 metres seats 15,000 people, one of the few indoor venues of that scale in southwest China, while the Yuelai International Conference Center adds three halls of over 1,000 square metres, a 5,200-square-metre pillar-free ballroom and 47 meeting rooms. Seen from above the complex resembles a giant butterfly, its roof a perforated aluminium grid shell covering 537,000 square metres and using about 10,000 tonnes of aluminium extrusions, creating the image of a park venue where city, forest and nature merge. Line 10 and the Guobo line meet at Yuelai, with Guobozhongxin station serving the halls.