QUESTION: Fix punctuation: chrome toilet brush holder toilet brush chrome
ANS: chrome toilet brush holder, toilet brush chrome

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: digital inputs 12pcs connected to the switches push buttons
ANS: digital inputs (12pcs) connected to the switches (push buttons)

QUESTION: Fix punctuation: Video How to apply the Droid 21 update
ANS:
Video: How to apply the Droid 2.1 update