1. As far as the image of product planning is concerned, for consumers, product planning is like conducting a symphony orchestra, so that many product lineups perform their duties in wonderful combinations like various musical instruments and play music that attracts consumers. ? For competitors, product planning is like arranging troops, so that all series products are prepared for attack and defense like various military forces to attract enemies. The content of product planning includes product structure planning, product serialization planning, positioning planning of various models, product length and width planning, product life cycle planning and so on.