Even if a grade certificate is issued, it will not be recognized internationally. The internationally recognized grade certificate begins with paragraph 1, so it doesn't matter whether there is a grade certificate or not, it should be issued by right. Probably not a member of China Taekwondo Association.

I will give you some addresses. Go and have a look.

Tianshan taekwondo

Longhu district, Shantou City, Guangdong Province

Xinlili taekwondo club

Floor 3, Changping Road 1 17, Shantou City

Jinyi taekwondo gym

Room 202, Chunheyuan 1 Building, Jintaozhuang West Zone, Changping Road, Shantou City

Tianshan taekwondo heidai club

Longhu district, Shantou City, Guangdong Province

Shantou workers cultural palace taekwondo gym

No.86 Jinsha Road, Shantou City 14DE