The VOCs treatment with compression and condensation, absorption and adsorption, and membrane separation & concentration is defined as category A technology, also known as the source recovery combination technology.
The VOCs treatment with explosion-proof flare, Regenerative Thermal Oxidizer (RTO) and Regenerative Catalytic
Oxidizer (RCO) is defined as category B technology, also known as destructive combination technology for end-of-pipe
emission treatment.