销售巨著：《简单7步，拿下订单！》

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点击【蓝色文字】收听桑德拉，7步签单-风靡全球53年实战销售课程，播放量近30万，现已进入哈佛商学院MBA正式课程，并通过《哈佛商业评论》向全球大学及商学院输送案例。

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