Zhaozhao is a very good and efficient company. I’m in Tanzania and I graduated 2021 from a Chinese university, recently I was applying for a master’s program in Sweden and they required online verifications from CHSI/CSSD. Zhaozhao helped attain the documents without any problem. I recommend them to any person who is out of China but wants the verifications, they will help you and their customer service is top notch.