How to prevent and treat formaldehyde pollution before and after the decoration? 
1Prevention: careful selection of home building materials sign environmental protection renovation contract so-called "precaution is better than cure", if the owners can from the beginning of the renovation to have the awareness of prevention of formaldehyde pollution, then you can start from many aspects, from the source to contain formaldehyde Excess release. Prevention of formaldehyde requires the following: 
â— Advocating simple decoration Reducing the amount of decoration materials used and the amount of construction as much as possible, because in the same space, the simpler the decoration, the less furniture is placed, and the less pollution is caused in the space. In addition, children's rooms should not be affixed with irritating odor-emitting wallpaper, but also try not to lay plastic flooring, which may release a large number of volatile organic substances, increase the degree of indoor pollution.
â— Signing an environmental protection decoration contract When the owner is in the decoration design, he can choose to negotiate with the decoration company to sign an environmental protection decoration contract. The contractor requires the construction party to provide an indoor environment inspection report stamped with the CMA chapter after completion of the contract, in order to supervise the decoration company to carry out the environmental protection renovation. Before the renovation, it is also necessary to predict the release concentration of harmful substances in the indoor environment after renovation, and reserve a certain amount of floating space for release. Because even if the indoor environment after the renovation standards, but placed furniture, furniture may also release a certain amount of formaldehyde pollution.
2 Governance: Ventilation and Ventilation after Renovation Use of Effective Methods to Reduce Formaldehyde Pollution Formaldehyde pollution is widespread during the renovation process. Therefore, if it can be targeted in a scientific way at a later stage, it can also reduce the formaldehyde pollution. To the lowest. 
High-temperature, high-humidity, ventilated, ventilated and newly renovated homes are not suitable for immediate relocation, but there should be some time for the formaldehyde in the materials to be distributed with high intensity. The volatilization rate of formaldehyde is closely related to the indoor temperature, humidity, and wind speed. If we can scientifically regulate the indoor environment, high temperature, high humidity, and large ventilation, we can better promote the volatilization of formaldehyde. â— Plant absorption method Many plants have a certain absorption capacity for formaldehyde, such as cactus, spider plant, aloe, clivia, cycad, chrysanthemum, etc. Among them, Chlorophytum is an expert in the removal of formaldehyde, it can absorb 86% of formaldehyde in 24 hours, purification 8 to 10 square meters of air. Others like to put tea leaves, grapefruit skin, onion slices, pineapple blocks, etc. in a newly decorated room or fumigation with white vinegar to eliminate formaldehyde odor.
â— Activated Carbon Adsorption Solid activated carbon has many characteristics of voids, and has strong adsorption and synthesis effects on formaldehyde and other harmful substances. The smaller the particles of activated carbon, the better the adsorption effect. Adsorption of formaldehyde by activated carbon is obvious. The amount of activated carbon should be different depending on the size of the room, and it should be replaced in time after being used for a period of time. â— Purifier Disposal Air purifiers in the current market are classified into negative ion type, ozone type, and filter adsorption type. Different types have different working principles. Air purifiers are very effective in absorbing harmful gases, but air purifiers can only be used in closed spaces. If windows are opened, the effect will be greatly reduced.
â— The chemical purification method mainly consumes formaldehyde in the air through physisorption or chemical reaction. At present, formaldehyde trapping agents on the market are divided into two types. One is to neutralize formaldehyde and generate harmless substances to clean the air. The other is to block the formaldehyde and prevent the volatilization of formaldehyde to purify the air. The use of chemical agents to remove formaldehyde is highly efficient and effective, but the release of formaldehyde is a long-term process, and it is necessary to avoid the onset of a "fixed-failure target."
3 Expert advice: Use air purification device can effectively absorb and decompose harmful gases Experts recommend that the majority of owners: If the home has just been renovated, then do not immediately stay, the house should be vacant for more than six months ventilation, before they can live. For the governance of formaldehyde, we must deal with the source of pollution. The sources of home-installed air pollution are mainly furniture, wallpaper, paint, and solid wood flooring. If necessary, air purifiers can be used to more targeted and quickly purify formaldehyde. The commonly used activated carbon filters can effectively absorb and decompose harmful gases such as formaldehyde, toluene, and TVOC. In addition to formaldehyde formaldehyde
Commonly used LEDs are divided into four types: in-line LED, TOPLED, piranha and high-power.
1) In-line LED:
The electrical connection is in the form of 2-pin in-line, which is a traditional low-end product. Because the package has a large thermal resistance and the chip is not easy to dissipate heat, the light effect decays quickly and the life is short. The advantage is that it is cheap and can be made into a small light-emitting angle.
2) TOPLED:
The electrical connection is in the form of 2, 4 or 6-pin patch, which is currently a commonly used light source. According to the size of the package shape, it is divided into 0805, 1206, 3528, 3535, 5050, 5060 and other specifications. The larger the package shape, the better the heat dissipation performance, the correspondingly larger the bearable power, and the more light output.
3) Piranha:
It is a 4-pin in-line package. The heat dissipation performance and reliability are better than ordinary 2-pin in-line package. It can withstand 50~70mA working current. It is a commonly used light source at present.
4) High-power LED:
LEDs designed and produced with large-size chips and enhanced hot channel technology are usually divided into specifications such as 0.5W\1W\3W\5W. A single 1WLED can withstand a working current of more than 300mA and output a luminous flux of more than 100 lumens. It is widely used In civil commercial lighting, traffic control, photography, night vision and other fields. The price of high-power LED is still relatively high. With the gradual maturity of the technology, it will hopefully replace the traditional lighting source completely and lead the world into an era of solid-state light source.
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