You are talking about a digital certificate authority, or CA for short. Legal CA must obtain the administrative license of electronic authentication service issued by the Ministry of Industry and Information Technology.

As of today, the licensed CAs are as follows:

Serial number, unit name, license number

1 Shandong Digital Certificate Certification Management Co., Ltd. ECP370 1020500 1

2 UnionPay Financial Certification Center Co., Ltd. ECP1010405002

3 Beijing Tianwei Chengxin E-commerce Service Co., Ltd. ECP11KLOC-0/0805003

4 Shaanxi Digital Certificate Certification Center Co., Ltd. ECP6101305004

5 SDIC Anxin digital certificate authentication co., ltd. ECP220 10405005

6 Guangdong Electronic Commerce Certification Co., Ltd. ECP440 10605006

7 Guangdong Digital Certificate Certification Center Co., Ltd. ECP440 10205007

8 Shanghai Digital Certificate Certification Center Co., Ltd. ECP3101KLOC-0/505008

9 Beijing Digital Certificate Certification Center Co., Ltd. ECP1010805009

10 Liaoning Digital Certificate Certification Management Co., Ltd. ECP21010205010

1 1 Hubei Digital Certificate Certification Management Center Co., Ltd. ECP42010605011

12 ECP Yixin Technology Co., Ltd.11010505012

13 Jiangsu CSI Electronic Commerce Certification Center Co., Ltd. ECP32011105013.

14 dongfang zhongxun digital certificate certification center co., ltd. ECP500 107050 14

15 Zhejiang Digital Security Certificate Management Co., Ltd. ECP330 103050 15

16 Fujian digital security certificate management co., ltd. ECP350 105060 16

17 Xinjiang digital certificate certification center (limited) ecp65010106017

18 Henan Digital Certificate Co., Ltd. ECP41010206018

19 Beijing Guofuan e-commerce security certification co., ltd. ECP111506019

20 Anhui Electronic Certification Management Center Co., Ltd. ECP3401106020

2 1 Hebei e-commerce certification service co., ltd. ECP13010106021

22 western security certification center co., ltd. ECP640 10 107022

23 Tianjin Yuan Bo Network Co., Ltd. ECP 120 19307023

24 Shanxi Digital Certificate Certification Center (Limited) ECP 140 10007024

25 Shenzhen Electronic Commerce Security Certificate Management Co., Ltd. ECP44030 107025

26 Tianjin Digital Certificate Certification Center ECP 120 19307026

27 Jiangxi Digital Certificate Certification Center ECP36000008027

28 China wangweixin electronic security service co., ltd. ECP 1 1030208028

29 Beijing Renzhong Yuhuan Science and Technology Development Co., Ltd. ECP1010509029

30 Hunan Digital Certification Service Center Co., Ltd. ECP43000009030