Doumen bus station of Zhuhai has two buses a day (departing at 9:15am, 10:30am). The one at 10:30 is luxury bus with seats (the first one is ordinary sleeper bus). Gongbei Tongda bus station also have buses to Putian (three buses between 4:30pm-5:30pm), but they are all sleeper buses. Suggest you take the the 10:30 bus. ticket orice is about 160rmb.

Thanks Cindy.
How long does the trip take? Do the luxury bus and sleeper buses have toilet facilities?

Ong