About 67 of these are doors 17 are magnesium oxide boards and 1 are flakeboards.
Perlite fire door core.
The burning behaviour of this product is classified as a1 non combustible rate in accordance with gb 8624 2006 classification on burning behaviour for building materials.
A wide variety of perlite fire door core options are available to you such as free samples paid samples.
You can also choose from 5 years 1 year and n a perlite fire door core board there are 70 suppliers who sells perlite fire door core.
China perlite board find detail steel fire door from zhangjiagang tianyuan machiney manufacturing co ltd.