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China never demands any institution or individual to violate local laws or build "mandatory back doors" to collect data, information or intelligence located in foreign countries, said the spokesperson.

Liu, of Sino-Crystal, said that man-made diamonds might not cannibalize sales of mined diamonds, but that market alone boded well for Chinese manufacturers.

Procuratorates instituted 89,523 public interest litigation cases and filed 2,560 such cases to courts from January to November in 2018.

Erhe's total tourism revenue reached 10 million yuan last winter. More than 80 percent of the villagers now work in the industry, and over 60 percent run their own businesses. Restaurants, guesthouses, souvenir shops, theatres and snow museums have sprung up in the village.