JFE Steel has started turning waste gas from its steel plant into chemicals. The project began in September 2026 at the Mizushima Complex in Okayama, Japan. JFE sends by-product gas to Mitsubishi Gas Chemical, which converts it into methanol at a new demonstration plant. Mitsubishi Chemical then turns the methanol into propylene, a key ingredient for plastics. The three companies will study whether the process can make money & work reliably. They also hope to bring other factories in the complex into the scheme.