Luggage / Baggage storage in Gongbei Border Gate / Jiuzhou Port

Hi,

I'm going to Zhuhai for a day trip from Macau and would like to find a place to store my luggage for a few hours so that I can travel to Hong Kong after my day trip in ZH. I will be going to the Port Plaza, Mount Shijing and Fisher's Girl Statue.

May I know any place in ZH that offers baggage storage facilities and is convenient? How much is the fee?

Thank you.