QUESTION: Fix punctuation: In 1972 1980 worked as a fine arts cadre in the Ministry of Railways of China Chengdu Railway Branch
ANS: In 1972 -1980 worked as a fine arts cadre in the Ministry of Railways of China, Chengdu Railway Branch.

QUESTION: Fix punctuation: Luxury bed linen in fine cotton sateen and the best cotton quality 6845
ANS: Luxury bed linen in fine cotton sateen and the best cotton quality (6845)

QUESTION: Fix punctuation: Transfer from London SW 9 Stockwell to London Paddington TRQQP Train station
ANS: Transfer from London SW 9 Stockwell to London Paddington (TRQQP) Train station

QUESTION: Fix punctuation: This packing roller is working as depth control and ensures a perfect consolidation of grassland
ANS:
This packing roller is working as depth control and ensures a perfect consolidation of grassland.