Please help me to correct my sentense!! sentences!

So I want you to cooperate in order to do that. If you help me,  I would apprieciate if you can help me, in return, I will help you mastering Japanese. ( in polite way, cooperate is like a team member who have to work with you)
Background
Hello, I'm Takafumi Tsugawa, and today I'd like to talk about Professor Aoyagi and his work to on createing a injections that mimics mosquito's stings.
Speaking of Refer to injections, people usually may refuse to hit it because it is so painful and is a burden on patients. bother to them.

( injectionって”する動詞”みたいです、そして、この文句の中心はこの動作をめぐる)

Some of them may even refuse to go to hospital because by reason of they hatinge injections. (Above people is normal way--refuse, but here some of them should be more serious--refuse to go to hospital) --

part 2 On the other hands, However,  ( "on the other hand ”is not like" 一方” which has the opposite meaning, here you should use contrast) not only when you catch a cold and or have the receive a vaccination, but also there are many the people who have to take daily injection to maintain their health conditions.under the skin every day. (injection itself means under skin, so omit)

For example, person with diabetes diabetics have to take injection many times a dayunder the skin to administer control insulin level. (Here to place "many times a day" after verb in order to make meaning clearly) 

Here is the second part:

 Now that you have some background information on painless injections, Now let's look at the focus of Aoyagi's research.

Research question
How should could he develop a painless injection ?

Methods and Data
1. He discovered the fact that a pain by injections is due to the structure of the needle.
2. His research team studied structure of mosquito's stings.
3. They discovered that mosquito's stings have two jagged needles and a normal needle.
4. Many companies refused the development of his new needles since because it is was different to develop. 
5. But a small factory in a town produced it by with the latest abrasive techniques.
6. It enabled doctors to puncture an exact location.

Conclusions and Future Research 
Actually it enabled to This development made it possible to administer a drug without feeling pain. As of 2016, for the achievement, it has been shipped one million I am not quite sure what you are trying to say here. Perhaps:As of 2016, one million of these needles have been shipped. Scientists aim to administer anyone, anywhere, and expand cosmetics in future.

Your English is really good! This was a fascinating entry. I hope my corrections help. Good luck, and keep hitting the books! You'll master English in no time!