Ruiyan, Established in Shenzhen 2005,is a subsidiary of sunseagroup,one of the leading factories which develops and produces communication test and software, supported by the Chinese government as the most importantly developed company.Ruiyan Communication Equipment Co.Ltd has a R&D headquarter in Shenzhen high-tech research center, possessing the most advanced patent for electronic R&D technique, leading us to be among the best in China.