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As other businesses have been wiped out during China's period of vast change and unprecedented business growth, these three Shanghai-based time-honored brands have not only survived but become leaders in their fields:

As of Nov 15, the country imported about 18.6 million metric tons of solid waste, Li Ganjie, also head of a cross-ministry team for reforming waste import management, said in a meeting of the team on Thursday.

As of June last year, there were 3,400 protectors like Liu scattered across 404 counties along the 21,000 km of the Great Wall, according to the State Administration of Cultural Heritage.

As it often grows into dense mats that clog channels, China has listed it as one of its 100 most dangerous invasive species. In addition, water lettuce will also block the exchange of air, reducing oxygen in the water and killing fish. Large mats can also block light and alter underwater plant communities.

As of May 8, China's AI enterprises totaled 4,040 and Beijing's Zhongguancun, known for its concentration of tech firms, has become an AI innovation center in the country, according to a white paper released by the Beijing Municipal Commission of Economy and Information Technology.