Add spaces: Goodsinothertypesofcargo,Coal,oilandchemicals

Answer: Goods in other types of cargo, Coal, oil and chemicals

Add spaces: IamanewcustomerandIwillonlybuyonce.

Answer: I am a new customer and I will only buy once.

Add spaces: Therearecertainconditionsnecessaryforaccurateobservation.

Answer:
There are certain conditions necessary for accurate observation.