si l'on consulte le site officiel :
www.mfa.go.th
les citoyens chinois PRC (
Hongkong a un autre statut a part)
c'est tourist visa de 30 jours (et extension restrictive de 7 jours maxi)
ou visa on arrival 15 jours (pas d'extension) (voir
www.mfa.go.th/...cument/ChartVisa.pdf)
sinon, je suppose qu'il faur rentrer dans une autre catégorie specifique B ou Non-O
VISA ON ARRIVAL - According to the Interior Ministerial Announcements, passport holders from 21 countries and territories may apply for visas at the immigration checkpoints for the purpose of tourism for the period of not exceeding 15 days. - The applicant must possess means of living expenses at the amount of 10, 000 Baht per person and 20, 000 Baht per family accordingly. - The applicant must possess a passport with at least six-month validity and must present full paid ticket which is usable within 15 days since the date of entry - Visa on arrival is provided at 32 designated international checkpoints and applicants should submit the application form duly filled out and to which his/her recent photograph (4 x 6 cm) is attached. The application fee is 1, 000 Baht. Visitors who enter the Kingdom with Visa on Arrival generally cannot file an application for extension of stay except in special cases such as illness which prevents them from travelling, etc. They can submit an application at the Office of Immigration Bureau, Immigration Division 1, Soi Suan Plu, South Sathorn Road,
Bangkok 10120. Tel. 02 287-3127 or 02 287-3101-10 ext. 2264-5 or at website
www.immigration.go.th
List of countries and territories is as follows :
1.
Bhutan : Kingdom of
Bhutan2. China : People’s Republic of China
3.
Cyprus : Republic of
Cyprus 
