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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 one of the largest independent nongovernmental environmental protection organizations, WWF started to protect the giant panda in 1980 when the Wolong National Nature Reserve in Sichuan province was established.

As of November 2018, about 1,000 facilities have been certified as long-term care institutions in the city, with around 32,000 registered nursing personnel, according to a statement from the office.

As of Saturday, China National Petroleum Corp has completed the construction of six medical mask production lines, with a daily production capacity of 600,000 units. With a total of 21 mask production lines having been put into operation, the company is capable of producing 1.5 million masks per day.

As of Saturday, Huawei has received 28 contracts from Europe, 11 from the Middle East, six from the Asia-Pacific Region, four from the Americas, and one from Africa, said Hu Houkun, deputy chairman of the company's board of directors during a press conference held Wednesday.