Zhangdian is a district located in Zibo City, Shandong Province, and Yiwu is a municipal district located in Jinhua City, Zhejiang Province. The two are geographically far apart and not in the same area.

You can try to find relevant sales locations in the following ways: 1. Find sellers of milk tea ingredients in local merchant markets or trade cities and ask if they sell related products.

2. Search for relevant information on the Internet, including brands, wholesalers, sellers, etc., to see if you can find the information you need.

3. Ask local milk tea shops or beverage shops to see if they can recommend or provide relevant sales information.