In order to avoid the harmful effects of harmful substances in new houses on human health, the experts suggested that the following points should be noted before entering new houses:
1. In terms of time, it is generally advisable to wait for a period of time after the completion of the renovation of the house, as this will allow most of the harmful substances such as free formaldehyde to evaporate from the new house, and the rest will not pose a threat to the human body.
2. When the room is vacant, it is necessary to do house ventilation and air purification. Ventilate as much as possible, conditional use can be effective to reduce harmful indoor air purification devices, but also can often open the window ventilation.
3. When purchasing furniture, environmental protection furniture should be selected. The housekeeper has no certification by the national authoritative department, and even considers signing related contracts with the furniture manufacturer. If the furniture is not environmentally friendly, it requires the manufacturer to return and claim compensation.
4. If you are still not confident about the above measures, you can also find environmental testing units with related testing qualifications to carry out indoor air testing prior to arrival, and take actions based on the test results and recommendations of relevant experts.
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The production process of copper in China is dominated by copper concentrates and pyrotechnic smelting of blister copper. The status quo is that the processing capacity is greater than the smelting capacity, smelting capacity has greatly exceeded the support capacity of copper concentrate, copper concentrate resources and scrap copper imports are required. Statistics show that in the 21st century, the output of domestic copper concentrate has not been significantly increased, maintaining an annual output of 600,000 tons (copper content, the same below), by the end of 2007 will form nearly 3.7 million tons of smelting capacity, far exceeding By then China's copper concentrate resources and the protection of the capacity of the international market may provide the amount of copper concentrate. The production capacity of copper mines in China can only meet 40% of the smelting capacity.
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