"GUANGMING RIBAO" (Guangming Daily)In about two years, four water purification stations have been established in the arid areas of Gansu Province, putting an end to local residents' days of drinking...
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"GUANGMING RIBAO" (Guangming Daily)In about two years, four water purification stations have been established in the arid areas of Gansu Province, putting an end to local residents' days of drinking...