How can i get L visa to visit China ? what papers do i need to prepare?

Hi, you need to apply through a travel agency, which appointed by Chinese embassy in Cairo. You can refer to http://eg.china-embassy.org/eng/ywzn/lsyw/bszn/t906612.htm for the contact information. General requirements are your passport, application forms, photo, valid residence for more than 3 months in Egypt, round-trip ticket and hotel reservation are required.