With good environmental emotion, Elemental Chlorine Free (ECF) bleaching and Totally Chlorine Free (TCF) bleaching have being trend of pulp bleaching, and taking over the traditional pulp bleaching processes.

• 无元素氯漂白(ECF)和全无氯漂白(TCF)技术由于具有良好的环境效应，已成为当今纸浆漂白的发展趋势，正逐步取代传统的漂白技术。