Another characteristic of challenger economies is the desire to create their own national standard, often using proprietary technologies or systems.

挑战者经济体的另一个特征是渴望创造自己的国际标准，往往采用专有的技术或系统。

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In the last year five other similar technologies have been approved by the FDA. The most serious challenger to ThermoLase is Israel-based ESC Medical Systems, which makes lasers for treating varicose veins and for hair removal.

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