The classification of the MDF toilet seat

1. (China MDF toilet seat)Indoor medium density fiberboard (hereinafter referred to as indoor type board), with the symbol MDF, is a medium density fiberboard that does not undergo short-term water immersion or high humidity. The plate type color identification is natural color.

2. (China MDF toilet seat)Indoor moisture-proof medium density fiberboard (hereinafter referred to as moisture-proof type board), with the symbol MDF. H, is a medium density fiberboard that can withstand cold water immersion or high humidity for a short time. It is suitable for indoor kitchens, toilets and other environments. The plate type color is marked in green.

3. Outdoor medium density fiberboard (hereinafter referred to as outdoor type board), with the symbol MDF. E, is a medium density fiberboard that can withstand the aging effect of climatic conditions, water immersion or moisture and heat of water vapor in ventilated places. The plate type color identification is gray.

The performance of MDF varies greatly due to different types of raw materials and manufacturing processes. According to the product technical indicators, MDF is divided into three grades: excellent products, first-class products and qualified products. In the national standard, the specified mechanical property indexes are: static bending strength, internal bonding strength, elastic modulus, plate surface and plate edge holding screw force; Physical performance indexes include density, moisture content, water absorption thickness and expansion rate. Chemical performance indicators include: formaldehyde emission, etc.