Shi Lian navigation AF300 is good. According to the survey related public information, AF300 is the best of all products of Shi Lian Navigation. Shanghai Shi Lian Navigation Technology Co., Ltd. Shanghai Shi Lian Navigation Technology Co., Ltd. was established on March 23, 20 15, with its registered address at Room 20 1 Building 99, Qingpu District, Shanghai, and its legal representative is Ma Fei.