Design competition strategy contains: the first to designquantity, different strategy, and concentrated strategy.
设计竞争战略：设计质量领先、差别化策略、集中性策略。
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Such a structural optimum design based on the reliability can increase the designquantity and obtain obvious economic benefit, that is to say, the structure is both safe and economical.
The iPhone wins on simplicity, refinement, thinness, design, Web browsing, music/video synching with your computer, accessory ecosystem and quality/quantity of the app store.