接着详细介绍了产品设计中的三个层次和产品设计企划的基本要点。
Thirdly, knowing the three levels of product design help us analyzing the basic point of product design planning.
新产品要在市场竞争中获得成功，必须让产品开发从一开始就走在正确的方向上，那么产品设计企划工作就显得尤为重要。
New product development must be pursued in a correct way from the beginning to win the market competition. Then, product design planning becomes obviously important.
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