BOPP is biaxially oriented polypropylene, which means that biaxially oriented polypropylene is stretched in both longitudinal and transverse directions, so its properties are greatly improved.

OPP is uniaxially stretched polypropylene, and its English full name is Oriented Polypropylene.

Regarding the performance difference between the two, it is suggested to go to the PP forum to find a professional BOPP manufacturer to communicate.