red grey volcanic lava rocks
1.Chemical Composition:

2.Properties:
a.It has lots of holes.
b.Weight is very light.
c.Perfect intensity
d.Heat preservation and thermal insulation, noice insulation.
e.Fireproofing
f.Corrosion and acid-base resisting
g.Non-pollution and no radioactivity, environment protection
h.Different specifications.
3.Physical properties:

4.Usage:
Lava is used in construction,irrigation works, grinding, filter material, barbecue charcoal, garden scene, soilless culture, etc. It is also a perfect material used in hot stone therapy, which is good to Promote the body's metabolism.

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