Question: Yesterday I went to visit my friend Helle who I made contact with recently after a several year break
Please fix the punctuation.
Fixed: [Yesterday I went to visit my friend Helle, who I made contact with recently after a several year break.]

Question: It can be either hazardous or nonhazardous
Please fix the punctuation.
Fixed: [It can be either hazardous or non-hazardous.]

Question: Topics of Bosch in Denmark and Bosch worldwide Bosch Denmark
Please fix the punctuation.
Fixed: [Topics of Bosch in Denmark and Bosch worldwide | Bosch Denmark]

Question: What were your impressions
Please fix the punctuation.
Fixed:
[What were your impressions?]