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美国《现代轮胎经销商》(www.moderntire-dealer.com)2012年3月8日报道:普利司通公司计划在美国启动大范围的研究项目,致力于开发银胶菊,使之成为与三叶橡胶树相当的、商业可行且可再生的高品质天然橡胶。银胶菊是一种生长在美国西南部和墨西哥北部的多年生灌木,其树皮和根可制成天然橡胶。
“Modern Tire Dealer” (www.moderntire-dealer.com) reported on March 8, 2012: Bridgestone Corporation plans to launch a wide range of research projects in the United States to develop guayule as a Clover tree equivalent, commercially viable and renewable high quality natural rubber. Guayule is a perennial shrub that grows in the southwestern United States and northern Mexico. Its bark and roots are made from natural rubber.