Provincial Highway 4 17 in Tongliang District and Kaizhou District of Chongqing. According to Baidu map, there are Jia Youfu jewels on the 4 17 provincial highway in Tongliang District and Kaizhou District of Chongqing. Jia Youfu Jewelry is registered in Guangdong Industrial and Commercial Bureau, specializing in the design, production, processing, sales and export of jewelry, and its "Jia Youfu Diamond" brand has obtained the trademark certificate of the State Trademark Office.