You can find the information of Visa to visit China at Chinese Visa Application Service Center(https://www.visaforchina.org/SEL1_EN/index.shtml) or Embassy of the People's Republic of china in the United States of America. For those who need a visa to travel in China, we can issue an invitation letter or a visa support letter for your visa application. Visa application process varies at the Chinese embassies/consulates in different countries, and the requirements may even vary for your different personal situations. Please consult with the Chines embassy/consulate where you are going to apply for the visa, if possible.
This is issued by the conference organization committee, which is an ordinary conference invitation letter. This is a quick and easy method, and the experiences indicate that this is good enough for most situations and most locations for applying for the visa. If you have completed the registration, you may request this invitation letter by filling out the form and emailing (sent to email@example.com) the form with the following information:
This is issued by the Northwestern Polytechnical University (the official sponsoring host institution of ER 2018), which is a formal official visa support letter. In case where the visa application policy is rather restrictive at the Chinese embassy/consulate in your region/country, we suggest you choose this method. And please send your request email to firstname.lastname@example.org as early as possible, since we need more time to process this type of letter. If you think you need a copy of the official visa support letter, please include the following information in the email: