全塑外壳，完全密封，无外加螺钉，无需接地线路。
Plastics cover, completely enclosed, without screws, requires no earth grounding.
外壳为全喷塑涂层，能长久保持光泽，美观大方；
Sprayed plastic coated outer case is beautiful in appearance and can keep luster long time.
外壳为全喷塑涂层，能长久保持光泽，美观大方；
Sprayed plastic coated outer case is beautiful in appearance and can keep luster long time.
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