销售组合
营销组合（Marketing mix）：是指企业为在目标市场取得期望得到的反应，而混合采用的一组可控制的战术营销手段。
营销组合可分为四组变量:
产品(product)
价格(price)
地点(place)
促销(promotion)
The marketing mix --A framework describing the different elements that marketers need to consider.
include--product, price, promotion, distribution(price), people, process and physical evidence.
textbook <Marketing> 2010, Elliott, Greg. WILEY. Australia.