vermiculite fireproof brick 1material:fireproof vermiculite 2 working temp:1100 3 feature:Natural, environmental-protection vermiculite fireproof brick1 Material: fireproof golden and siver vermiculite2 Working temp:1100 3 Advantage: Natural, environmental-protection orientated, no poison and no radioactivity Fireproof, damp-proof,anti corrosion4 Specification: (mm): 2440x1220x15, , 2100x900x38, ...