Austrian visiting Hongkong, Macao, Shenzhen and Zhuhai

I was planning to fly to Shenzhen then visit Hongkong and Macao after that i planned visit Zhuhai.
But there are three different visa-typs, one-time entry, two-time entry and multiple entry.
To be on the safe side i would prefer the multiple entry visa, but i'm not sure if there is any multiple entry one for Austrian tourists?.