生意社：产量放量且开工率走低 5月天然橡胶行情趋弱 1 June 2021 生意社：产量放量且开工率走低 5月天然橡胶行情趋弱 – 达人说胶 – 大宗号Author: Capt. Johnhttps://news.soship.com/show/229298/