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How to file a flat surface of a workpiece with a file?

The current national standards for detecting formaldehyde related to indoor environments mainly include:

1. The national standard of the People's Republic of China, "Hygienic Standard for Formaldehyde in Indoor Air," stipulates that the maximum allowable concentration of formaldehyde in indoor air is 0.08 milligrams per cubic meter.

2. The national standard of the People's Republic of China "Solid Wood Composite Flooring" stipulates that the formaldehyde emission of Class A solid wood composite flooring is less than or equal to 9 milligrams/100 grams; Formaldehyde emission from Class B solid wood composite flooring

Equal to 9 milligrams to 40 milligrams per 100 grams.

3. The "Technical Requirements for National Environmental Labeling Products - Artificial Wood Panels" stipulates that the formaldehyde release from artificial panels should be less than 0.20 milligrams per cubic meter; Formaldehyde release from wooden flooring

It should be less than 0.12 milligrams per cubic meter.

4. The national furniture standard GB5296.2004 stipulates that if the formaldehyde emission exceeds the specified standard of 1.5 milligrams per liter, the relevant manufacturer will be fined 50% to 3 times the sales amount. Will also be affected

Punishment for suspected fraud.

10 phenomena of excessive indoor formaldehyde during self inspection:

1. Every morning when I wake up, I feel suffocated, nauseous, and even dizzy;

2. Family members are often prone to catching colds;

3. Do not smoke and rarely come into contact with smoking environments, but often feel uncomfortable in the throat, have foreign objects, and have difficulty breathing;

4. Children often cough, sneeze, and have weakened immunity, and they are unwilling to return to newly renovated houses;

5. Family members often have skin allergies and other problems, which are common in groups;

6. Everyone in the family has a common disease, and after leaving this environment, the symptoms show significant changes and improvements;

7. Newlyweds who have been infertile for a long time cannot find the cause;

8. Pregnant women may discover fetal abnormalities under normal circumstances;

9.After a new move or renovation, indoor plants are not easy to live, and leaves are prone to yellowing and withering, especially some plants with strong vitality that are difficult to grow normally. Domestic pets such as cats, dogs, and even

The tropical fish inexplicably died, and so did the neighbors;

10. Newly renovated homes or newly purchased furniture have pungent, eye-catching, and other irritating odors that persist for more than a year.


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