QUESTION: Fix punctuation: Size Diameter 1015 cm
ANS: Size: Diameter = 10-15 cm

QUESTION: Fix punctuation: Hold HD video meetings through Hangouts with up to 15 people on your laptop tablet or phone
ANS: Hold HD video meetings through Hangouts with up to 15 people on your laptop, tablet or phone.

QUESTION: Fix punctuation: In mainland China and the island of Taiwan Standard Chinese mandarin is the common language
ANS: In mainland China and the island of Taiwan, Standard Chinese (mandarin) is the common language.

QUESTION: Fix punctuation: Up to three children under 12 years are charged EUR 12 per night when using existing beds
ANS:
Up to three children under 12 years are charged EUR 12 per night when using existing beds.