韩国龙声电机株式会社(yongsung electric co;ltd)型号齐全，价格优惠：
led太阳能路灯，led投光灯，led吊顶灯，led日光灯都已经可以批量生产了。例如10瓦的led日光灯就可以替换40瓦的普通日光灯或者节能灯。
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按钮开关英文名称：push-button switch是指利用按钮推动传动机构，使动触点与静触点按通或断开并实现电路换接的开关。
互感器又称为仪用变压器，是电流互感器和电压互感器的统称。
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电压互感器可在高压和朝高压的电力系统中用于电压和功率的测量等。
woonyoung主要产品：变压器、固态继电器、功率调整器、滤波器、电源开关、互感器、轴流风机、智能仪表。固态继电器,无触点继电器.
背光源按光源类型主要有el、ccfl及led三种背光源类型，依光源分布位置不同则分为侧光式和直下式底背光式。以下是它们的简单介绍。
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