We are focusing on the research and development of new products.

He is a world-renowned researcher.

My brother is a graduate student at the University of Tokyo.

The use of chemical weapons is prohibited by international law.

Analytical chemistry is a science that reveals the composition and structure of substances.

I am majoring in physical chemistry at university.

This chemical reaction is very dangerous.

I am majoring in inorganic chemistry at university.

My major is chemical engineering.

I am majoring in biochemistry at university.