inlays for plastic case 7303/7304

How would the previous sentence be correctly capitalized?
Answer: Inlays for plastic case 7303/7304
this is the old version of tk11, i.e. not the r2 version. it is running on a 18650 battery.

How would the previous sentence be correctly capitalized?
Answer: This is the old version of TK11, i.e. not the R2 version. It is running on a 18650 battery.
what is the difference between paid members and free members?

How would the previous sentence be correctly capitalized?
Answer: What is the difference between paid members and free members?
in certain geographic areas , especially away from the cities there are usually no choice of heating energy source . in addition, the same house, depending on the location will need different amounts of energy (up to several hundred percent) .

How would the previous sentence be correctly capitalized?
Answer: In certain geographic areas , especially away from the cities there are usually no choice of heating energy source . In addition, the same house, depending on the location will need different amounts of energy (up to several hundred percent) .