Site na Septemba 10 ruo 12, 2021, 2021 China (International) Diry Technology Expo mere nke ọma na Hangzhou International Expo Center, na-adọta ọnụ ọgụgụ buru ibu nke ndị ọbịa ọkachamara n'ụwa niile. Ihe ngosi a na-ekpuchi ihe owuwu ebe ịta nri, akụrụngwa mmiri ara ehi, ihe eji eme ihe, usoro ...
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