drain board

As a sound and heat insulation material, it is made of fiber (the same raw material as paper) and has
a history of many years.
Over the years
There have been continuous improvements, especially in terms of flame retardancy.
With its good thermal and sound insulation properties and flame retardant properties, it has become the choice of railway passenger cars and tram manufacturers as early as the 1930s. Its unique corrugated structure allows small water droplets caused by temperature differences to be smoothly exported without adhering to the car body. Coupled with its extremely light weight, it makes it possible to control the weight of the train and promotes its widespread application on high-speed trains. In addition
The installation operation is simple and easy, and it is recyclable. From the perspective of the environment and natural resource utilization, it is the most affordable cold-proof material.