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贵司有提供哪几类电源？ 我们专业从事恒压、恒流LED驱动电源，还有0~10V/triac/DALI调光电源 
恒压驱动电源和恒流驱动电源有什么区别？ 恒压驱动器调节指定的输出电压。使用恒压电源的设计需要调节系统中的电流。这对于不知道安装的LED总数或需要添加控制的应用程序非常有利。恒流驱动器调节指定的输出电流。设计使用恒流能够很容易地连接驱动器的输出直接到没有额外调节的LED灯。这是可能的，因为LED灯可以通过它们的电流直接响应。
贵司的质保期是多长？ 根据市场定位。高端产品质保5年。低端产品质保2年。
请问贵司有最小起订量吗？ 我们的最小起订量是100台，但是我们也欢迎小批量的试订单。
什么是LED？ LED是发光二极体，或者是电子元件，它通过二极管内部的电子运动将电能直接转化为光能来发光。由于led非常高效，它们正开始取代大多数传统光源。
什么是PF和PFC ?为什么它们对指定LED驱动器很重要? 功率因数(简写为PF)是交流电力系统中实功率与视在功率的比值，用0到1之间的数字表示。实功率是由负载产生的实际功率，而视在功率是负载电流和负载电压的乘积。由于电压和电流可能是异相的，视在功率可能比实际功率大得多。 为了保持高功率因数，开关电源(包括LED驱动器)必须采用某种形式的功率因数校正(PFC)。
这是一个重要的问题，因为低功率因数的负载与高功率因数的负载相比，在传输相同数量的实际功率时，会吸引更多的电流。因此，在公用事业线路中，低功率因数导致更大的电力损失。现在有一些标准要求在开关电源和/或LED驱动器中进行一定程度的功率因数校正。
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