An applicant is required to complete an online application form via the websitehttps://visaforchina.org. please print out the visa application form , bring your passport and documents (requirements for visa application. Clik here.) to Chinese visa application service center in Chiangmai  ( at 9:00-15:00 of bussiness day). The visa processing time is 4 working days (In case of legal holidays of China and Thailand, it will be automatically postponed).