To practice innovation through sustainability, we need to look at the alternatives for limited resources in chemical industry. Firstly, we have to intensify our conversion and downstream processes to make them more efficient and effective. Secondly, reuse side-streams to reduce the cost for land-filling and for treatment. Thirdly, replace regular feedstock with renewable feedstock and energy with renewable energy. Lastly, we will also have to reuse the auxiliaries like solvents, water, catalysts, and so on.