Evaluation of green building materials: patents related to the manufacture of concrete admixture and water reducer?

2. China patent application number: CN 201910665916. Title: A green and environment-friendly concrete water reducer and its preparation process.

3. China patent application number: CN2020 10344875. Title: A green concrete water reducer and its preparation method.

4. China patent application number: CN202 1 10447567. Title: A concrete water reducer for green ecological building and its preparation process.

5. China patent application number: CN202 1 10683564. Title: An environment-friendly and energy-saving concrete water reducer and its preparation process.