Today I will mainly sort out the terms and concepts behind carbon neutrality, carbon trading, and carbon allowances. I hope it will be helpful to everyone!

Polylactic acid (PLA), also known as polylactide, has a molecular formula of (C3H4O2)n. It is a type of aliphatic polyester polymerized by the fermentation product of microorganisms-lactic acid as monomer. Corn, cassava, etc. as raw materials.