Long distance bus from Shenzen to Guillin

Dear VIVI, Thank a lot for your information.
if U or any person Possible help me to source for the long distance bus station telephone number or official bus company wed site for trip schedule.
1)Bao'an long distance bus station,
2) Longhua long distance bus station,
3)Yinhu long distance bus station,
4) Futian long distance bus station,

once again, Many Thank