| spdbiz was formed by an engineer team who have
been working in overvoltage protection area for 10 to 35 years
and led by an expert who is senior member of both the Chinese
Institute of Electronics and the IEEE |
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致力于雷电防护和过电压防护领域的防雷技术研究、地网接地设计的专业网站. |
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 关注防雷搜索客(about) |
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| 权威的防雷期刊 |
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| 防雷产品尽在防雷商城(spd_shop) |
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| 专题报道(recommend) |
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