co2 extraction process

6 Best Keys to Know the Supercritical CO2 Extraction Process 

What is supercritical CO2 extraction method?
What is basic principle of supercritical CO2 extraction method?
Is CO2 extraction better than cold-pressed?
Is CO2 extraction safe?
Why is CO2 Extraction Better than Butane / Solvent Extraction?

Why use CO2 extraction is better?