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Any form of precipitation with a PH level below 5.6 is called acid rain. Precipitation with a PH level of under 4.5 is regarded as severe acid rain. Acid rain is made up of water droplets that are unusually acidic because of atmospheric pollution, most notably the excessive amounts of sulfur and nitrogen released by cars and industrial processes.

Another Chinese customer Qu Lijun, a student in Germany, recalled her embarrassed moment when she went shopping in a supermarket but forgot to carry her wallet.

Apart from telecommuting, distant education is another focus for IT companies. iTutorGroup, the smart education arm of Ping An Insurance (Group) Co Ltd, opened its online study platform for free. The platform enables students across China to learn effectively at home.

Another service provider, Messe Frankfurt, one of the world's largest trade fair organizers, said it also eyes great potential in China.

Another zone, Fangchenggang in South China's Guangxi Zhuang autonomous region, is the largest port in West China and also the country's gateway to the waters of ASEAN countries. Express roads and railways in the region are linked with the country's transportation network.