Sarda Plywood Industries Ltd. Offers Fire Retardant Plywood Impregnated with Chemicals. Sarda Plywood Industries Ltd. Manufactures Paper and Tea besides Plywood and allied products. The Fire Retardant Plywood Impregnated with Chemicals conjures up images of widespread harm, damage or loss of life. This plywood has been impregnated with chemicals, which give the product an in flammability level, not less than 30 minutes. Additionally it is boiling water proof and termite resistant. The Fire Retardant Plywood Impregnated with Chemicals comes under the brand name "Fireshield".