a manufacturer of 3x5 watts 6 watt at guangdong china.

How would the previous sentence be correctly capitalized?
Answer: A manufacturer of 3x5 watts 6 watt at GuangDong China.
...closer. you will need to forget the past.

How would the previous sentence be correctly capitalized?
Answer: ...closer. You will need to forget the past.
some people suffer from intolerance towards cow's milk and other foods.

How would the previous sentence be correctly capitalized?
Answer: Some people suffer from intolerance towards cow's milk and other foods.
to begin your free file analysis, simply drag-and-drop your arch00 file inside the dotted lines below, or click "browse my computer" and select your file.

How would the previous sentence be correctly capitalized?
Answer: To begin your free file analysis, simply drag-and-drop your ARCH00 file inside the dotted lines below, or click "Browse My Computer" and select your file.