Which visa do we need. Hello

So we booked for our trip
We will be flying out of Vancouver BC May 1 2018 going to Shanghai as a layover then leave Shanghai and going to Phuket Thailand for some days
Then we from Phuket we come back to shanghai as a layover again to go to Bali, Indonesia for some day then coming back to shanghai for the last layover then back home to Vancouver May 15 2018