hello i would like to go to Guangzhou to visit canton fair how much the fees and what requirement?

You should apply for a M type for your visit. It requires your passport, application form together with a recent passport photo and invitation letter from a Chinese company or any entity. Sometimes, letter of confirmation or invitation letter from duly authorized unit is required too. As for the cost, please contact the embassy for details. There is no official notice on the website of Chinese embassy in Yemen.

hi
how are you doing i wish you are well.can i fill the application form by myself or they have to fill it online

You are suggested to fill it online and then print it out.