Where can i buy maternity birthing packs which is needed at the hospital?

hii evryone am due in april..can anyone tell me where i can buy all tht maternity birthing things to buy???like foe mother n also for new born...maternity pads with bandage...dnt knw whr u can buy tht..maternity pads, pads,nursmg bra,,also new born vest/gown/shawl.....what all i need to buy....being a first time mother dnt knw anythg plzz helpp...any shop in hongkong wher can get all these..?