question: 3. pe rattan is passed sgs test, rattan color can be selected.
Capitalize this past sentence correctly.
A: 3. PE rattan is passed SGS test, rattan color can be selected.

question: some scientists have invented very good machines capable of benefiting lots of people in a short time, but they lack support. conversely, some people are jealous and sabotage their projects, so as to deter their development.
Capitalize this past sentence correctly.
A: Some scientists have invented very good machines capable of benefiting lots of people in a short time, but they lack support. Conversely, some people are jealous and sabotage their projects, so as to deter their development.

question: we are interested in your opinion.
Capitalize this past sentence correctly.

A: We are interested in your opinion.