What does oppor9 ID20 15cp7073 mean?

This is CMIIT ID code, which is the type approval code of radio transmitting equipment.

Radio transmitting equipment refers to all kinds of equipment that emits radio waves, but does not include industrial, scientific research, medical equipment, electrified transportation systems, high-voltage power lines and other electrical devices that can radiate electromagnetic waves.

Generally speaking, only radio transmitting equipment with the model approval code of radio transmitting equipment in China is a radio transmitting equipment that can be sold and used in China.