The balconies ' polycarbonate partitions , polyurethane deck tiles , and the plastic furniture were highly combustible .
The balconies ' polycarbonate partitions , polyurethane deck tiles , and the plastic furniture produced large quantities of very thick black smoke when burned .
The balconies ' polycarbonate partitions , polyurethane deck tiles , and the plastic furniture were highly combustible and produced large quantities of very thick black smoke when burned .