I want to visit Canton Fair 2019.could you please inform me about the process?

You can apply for tourist L type for the visit. First, you need to provide a filled-out application form affixed with a passport-style photo, your passport and its photocopy, residence permit in Bangladesh, bank statement, travel itinerary, and an invitation letter from a Chinese travel agency, round trip air tickets and hotel reservation. Next, submit the application to the China embassy.