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西门子于2011年3月21日正式面向中国市场推出全新Sirius(国产)系列控制和保护产品。Sirius(国产)是全球同步、创新的低压控制和保护产品,秉承西门子全球统一的质量控制
On March 21, 2011, Siemens officially launched the new Sirius (domestic) series of control and protection products for the Chinese market. Sirius (domestic) is a globally synchronized, innovative, low-voltage control and protection product that is up to Siemens global quality control