To prevent oxidization of Polaroid, fire extinguishers, photographs, and films, prevent global pollution by the balancing water of tank vessels, keep tank vessels moving at a high speed and prevent pirates by an approach preventing panel, and provide cars using such engine and rockets moved by H2, O2 by sufficiently utilizing the antioxidizing capability of N2 and the explosive energy of H2, O2.

The antioxidizing capability of N2 and the fire extinguishing capability which is nontoxic to human are utilized. Good-tasting water is put into rubber balloons without losing the taste. The tank vessels are kept moving at a high speed by the engine of H2, O2 and H2, O2 are reproduced by batteries by power generators and liquid crystal panels. Even jet engines can be produced by H2, O2 energy.