is it possible to get the visa on arrival at bejing airport or we have to apply here in chinese embassy at Bahrain?

Please i would like to know what is the procedure to obtain a business/visit visa for my GM & manager for Bejing who want to visit there to have a knowledge of the buisness prospects there can you tell me is it possible to get the visa on arrival at bejing airport or we have to apply here in chinese embassy at Bahrain & what is the procedure.