Are they the same buses departing from Bus from Hangzhou west bus station and Tourist Center ?

No, they are not the same one. Hangzhou Tourist Center is located at no.3, Huanglong Road.
Can I have the idea about where you will head for? Then I can check the schedule for you.
May I know where you will start to Hangzhou Tourist Center?
You can ask a Chinese friend to help you book this ticket on the official website of Hangzhou Transportation Company.

Thanks Hebby,
I am heading from Hangzhou to Huangshan Scenic area (Tangkou). I know that buses leave from West bus terminal (Hangzhou) at 8:00,9:50,10:50,12:40,14:10 to Tangkou.
You can reach Tangkou from Hangzhou from Hangzhou Tourist Center as well.
What is the timetable for buses heading to Tangkou from Hangzhou Tourist Center ?
Are they the same buses? for instance: the bus depart first from Hangzhou Tourist Center then goes to West bus terminal (Hangzhou) or vice versa?

The information on the official website of Hangzhou Tourist Center shows that the bus departs at 07:40 every day. The ticket fare is CNY100/adult. I am afraid they are not the same bus.

Thanks Hebby