MTBE (methyl tert-butyl ether) is a high Octane Number (RON 117) chemical compound, and accordingly mostly used in gasoline as an octane booster and oxygenate, that prevents engine knock. The most important current use of MTBE is as an environmentally safer gasoline additive to replace lead organic additive compounds in the unleaded gasoline for minimizing air pollution. TASCO, as the first company in Asia Pacific region to produce MTBE and had been the leading manufacturer in Taiwan for decades, is proud of serving our society with cleaner air. The production of MTBE was the first step of TASCO’s effort to help improve Taiwan’s air quality and environment.