Promote harmonization and safer chemical use: Since the Rio Conference, trade unions have been involved in local, national and international efforts to promote chemical safety (Chapters 19 and 20).
29. 促进统一和更安全地使用化学品：自里约会议以来，工会一直参与促进化学品安全的地方、国家和国际努力（第19章和第20章）。