In recent years, WEIXIAN has focused intensively on ultra-low-dioxane technology. Building on the earlier Unit 79 Neutralization and Dioxane Stripping process, WEIXIAN has developed the new Unit 89 Dioxane Multi-stage Stripping process, which achieves a dioxane removal rate of 65%–99% as required. With this technology, a dioxane content below 1 ppm can be reliably achieved, regardless of the feedstock EO number or initial dioxane level.   In April 2026, WEIXIAN engineers successfully commissioned an ultra-low-dioxane system in South Korea.   Through careful optimization of operating parameters, the system achieved an 88.7% removal efficiency, reducing the dioxane concentration from 9.88 ppm to 1.13 ppm. The customer was highly satisfied with the results, and further reduction is available on request.   This breakthrough enables any sulphation plant to meet the strictest SLES dioxane limits required by high-end markets, while keeping costs relatively low.