Isolators | Beijing Rainbow | Lightning Isolators are provided by Beijing Cariboo. Isolators, Beijing Rainbow, isolators are Ruibo Yi Branch (Beijing) Technology Development Co., Ltd. (www.roybo.cn) 2014 年 United States launched a new upgrade ROYBO (Cariboo) isolator R7 Series isolators almost can not consider grounding problem because R7 series connected with the mounting rail base is specially designed lightning isolators, which can firmly snapped onto the rail, but also can be severe lightning surges generated by the rail bleed out. U.S. roybo isolator features: U.S. Cariboo high cost isolator isolators, compared with other imported products roybo isolation, the price advantage is obvious, because the United States Rainbow in order to seize the domestic market, so the price compared to other brands to much cheaper, so be competitive.