The limit value of F F★★★ formaldehyde content is 0.3mg/L, which is 40% lower than China E0 standard of 0.5 mg/L, and the formaldehyde emission is less than 5 micrograms, which is 4 times lower than China E0/ EU E 1 standard.
In the brand floor in China market, 95% can only reach E 1 grade, 4% can reach E0 grade, and only 1% can reach F4 star. Because F4 Star is the highest standard in the world, it is difficult to meet the standard.
Extended data:
Precautions:
1, when maintaining the solid wood floor, you must pay attention to keep the floor dry and clean to avoid contact with a lot of water. It is not allowed to scrub with corrosive liquids such as alkaline water and soapy water to avoid damaging the paint film; You can wipe it with a wringing cotton mop. If there is any stain, it should be wiped with steel wool. It is not allowed to wipe wet mops, gasoline, flammable materials and high-temperature liquids.
2. Wax once every once in a while to see the smoothness of the floor paint. It is recommended to wax at least twice a year for maintenance. The method is to clean the floor with a semi-dry rag and wax it. Floor wax should be evenly coated on the floor surface and soaked. When it is slightly dry, wipe it back and forth with a dry soft cloth until it is smooth and bright.
3. If you accidentally pour water or leak water on the ground, you must wipe it with a dry soft cloth in time. After cleaning, you can't directly expose yourself to the sun or bake with an electric stove, so as to avoid drying too fast and cracking the floor. Animal urine is acidic and alkaline, so it should be cleaned when used.
Baidu encyclopedia -F four-star standard certification
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