Question: Contact type 6 no contacts 24 V 2 A
Please fix the punctuation.
Fixed: [Contact type: 6 n.o. contacts, 24 V, 2 A]

Question: Since no one in Denmark could answer who A A Kranhold was and as mentioned why he had thrown himself into the early Danish stamps I had to expand my search as it was no good to search the Danish philatelic journals
Please fix the punctuation.
Fixed: [Since no one in Denmark could answer who A. A. Kranhold was, and - as mentioned - why he had thrown himself into the early Danish stamps, I had to expand my search as it was no good to search the Danish philatelic journals.]

Question: US closed two banks a total of 36 since the beginning of
Please fix the punctuation.
Fixed: [U.S., closed two banks, a total of 36 since the beginning of]

Question: 46551 19 Brain Health Human brain Imagination Mind Neuron Susumu Tonegawa Thought
Please fix the punctuation.
Fixed:
[46551 19 Brain, Health, Human brain, Imagination, Mind, Neuron, Susumu Tonegawa, Thought]