Barrier-free services are of great significance for protecting the rights of people with special needs to participate in social life on an equal basis,obtaining fair and reasonable opportunities for survival and development and promoting the process of social democratic...MORE Barrier-free services are of great significance for protecting the rights of people with special needs to participate in social life on an equal basis,obtaining fair and reasonable opportunities for survival and development and promoting the process of social democratic civilization.The public library is a key product of...