即使IT的层叠不会改变那么多，客户感知到得不同层面的价值也会变化，IT公司靠不同层面来赚钱，利润也会相应变化。
Even though the it stack may not change all that much, the perceived value of the different layers will shift, and with it the amount of profit it firms can make from each of them.
另外，Laureate项目还有421A免税证明（凭此证明，一般收费项目都是按合理水平收取，从而增加客户的感知价值）。
The Laureate also has a 421A tax abatement that keeps common charges reasonable and enhances the perceived value.
提高客户感知价值。
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