Place of Origin : Monrovia,Liberia

https://www.ytrefractory.com/products/rock-wool-blanket.html

Rock wool blankets are manufactured by melting volcanic rock, typically basalt or diabase, at a very high temperature and then spinning the molten material into fibers. These fibers are then bonded together using a binder, such as a thermosetting resin or an organic adhesive, to form a blanket-like product.

The key properties of rock wool blankets include excellent thermal insulation, fire resistance, and sound abs