可持续发展营销公司谢尔顿集团(Shelton Group)的首席执行官苏珊娜·谢尔顿(Su竞彩足球app怎么下载zanne Shelton)说，民意调查显示，24%的人口属于“活跃人群”。This group shops often and is brand loyal and materialistic — but only when products serve as an external expression of internal values. At GreenBiz Forum 2014, Shelton shared the three ways companies can reach this powerful audience to drive success and sustainability efforts. "There is a tremendous sales and marketing opportunity here for you," she said.