1, national certification. Shenzhen Jianyi Jewelry Testing Co., Ltd. is a nationally recognized authoritative testing institution and the only professional authoritative testing institution in Shenzhen.

2. High recognition. Shenzhen Jianyi Jewelry Testing Co., Ltd. is an authoritative testing institution recognized by the state, which is highly recognized in China. According to the survey, it can circulate 500,000 certified products in almost one year.