You could probably remove one of the resistors on the back to change the I2C address which would be specified in the manufacturer's datasheet for that display module. It's probably only available in Chinese language.
I've seen some SPI/I2C displays that have a key silkscreened on the back giving enough info for you be able to change the I2C address or set usage between SPI or I2C serial communications via jumpers or remove/place resistors. Before making another purchase, best to just look at all the available display module options on supplier web pages (like Adafruit.com or SparkFun.com) or on eBay.