3 to 5 working days. According to the information of official website in the west of Shenzhen Taxation, it takes 3 to 5 working days for Shenzhen Taxation official website to purchase, mail and deliver the invoice, and it will be delivered to the scheduled address. Shenzhen, referred to as Pengcheng for short, is a prefecture-level city under the jurisdiction of Guangdong Province, a city with separate plans and a megacity.