wholesale jm23/26/28 mullite insulation insulating fire ...
JM23 insulating brick is the new energy saving material for insulation. JM23 insulation brick are produced accordance with German industrial standard that especially for export to foreign countries. JM23 Mullite Insulation Brick Feature 1.Mullite lightweight fire brick have low creep. 2.Mullite insulation refractory bricks have high load. Get Price
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