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Apr 27, 2020
How to clean clothes healthy
In our lives, we generally use laundry detergent or liquid detergent to wash clothes, but these products contain products of...
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Apr 21, 2020
Ozone, a new way of sewage treatment
With the economic development, the waste water generated in industrial production increases year by year, and the direct discharge of waste water will cause environmental pollution, which has posed a serious ecological and life threat to many areas of the world.
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Apr 20, 2020
How can individuals prevent COVID-19? WHO gives 10 basic recommendations
The Director General of the World Health Organization Tan Desai gave advice at a press conference on basic advice on...
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Apr 20, 2020
Parents must see! How can children prevent COVID-19？
One, often open windows for ventilation. Open windows every morning, evening and night for no less than 30 minutes each...
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