美国“菱彩”(SPECTRUM)牌优质电子产品系列,是美国北欧集团“R&D”部门专人研究并生产的最先进之系列产品,畅销美国、欧洲等地区,其质量及服务深受用户的信赖。 该公司引入国内市场的CTV(见封面)即是SPECTRUM系列产品之 The SPECTRUM brand high-quality electronic product line of the United States is the most advanced series of products researched and produced by the R&D department of the U.S. Nordic Group. It is well sold in the United States, Europe and other regions, and its quality and service are trusted by users. The company introduced CTV in the domestic market (see cover) is the SPECTRUM series of products