How to distinguish between large capacity injections and small capacity injections?

Large capacity injections and small capacity injections are distinguished by 20ml, with injections larger than 20ml being large capacity injections and injections smaller than or equal to 20ml being small capacity injections; Except for freeze-dried powder!
Liquid injections are divided by volume into small volume injections (below 20ml, conventional 1, 2, 5, 10, 20ml) and large volume injections (above 50ml, conventional 50, 100, 250, 500ml, etc.)
Injection refers to sterile solutions (including emulsions and suspensions) made of drugs for injection into the body, as well as sterile powders or concentrated solutions prepared into solutions or suspensions before use.