Shenzhen port has moved up two spots to become the world's fourth-busiest facility this year, after its year-to-date container throughput jumped a comparative 40 per cent to 9.66 million boxes. However, Shenzhen, which is competing with Shanghai to be the mainland's busiest port, recorded 600,000 teu (20-ft equivalent units) less than Shanghai in the first 11 months of this year. According to an industry source, Shanghai port handled more than 10.26 million teu in the first 11 months of this year, up a comparative 34 per cent year on year. 'Shanghai is pushing hard to keep its leading status this year. But Shenzhen may catch up next year with more berths coming into service,' a port operator said. 'Container handling capacity in Shanghai will be maxed out next year as the Yangshan project is yet to be operational.' Shekou Container Terminal, in Shenzhen west, added one berth in August, while another will begin operations by the end of the year. A new berth at neighbouring Chiwan Container Terminal will also be operational next year. Yantian, in Shenzhen east, will have three more berths coming into service at the end of next year. Shenzhen was level with Shanghai after its throughput exceeded the eastern city in August and September. However, Shanghai took the lead again last month after handling 1.03 million boxes, compared with Shenzhen's 985,681 teu.