Hello my name is deepak gupta and i will apply for china visa 2nd time

Could you tell me which country do you come from and where do you apply?

Still i am indian, and i visit 1 time china in april 2015. now i want to go again in (guangzhou) PRC.

Hello, if you come for tourism purpose, you should apply for tourist L type. Those materials are required: the application form, a recently-taken passport- styled color photo, your passport and copy of its data page, as well as round trip air tickets and hotel reservation, or an invitation letter from an individual in PRC. It charges 4982INR.

How many days after apply, do i receive my visa ?

Normally speaking, you should wait for four working days.