CORRECTION:

1.  I am am cost estimation team and I handle software related to manufacturing.

> I am a (put article "a") member of the cost estimation team and I handle software related manufacturing.

2.  I sometimes get a chance to travel for business intetnationally.

> I sometimes get a chance to have a business trip abroad.

3. My most recent business trip was to China.

> My most recent business trip was in (use preposition "in") China.

4.  I made a tour of the local factory and had a meeting with the staff there.

>  I had (use "had") a tour of the local factory and had a meeting with the staff there.

5.  I remember that trip. becuase the business partner in China booked us a 5-star hotel so we got to enjoy the breakfast and sauna at no cost.

>  I wll (future tense "will")  always remember that trip (no period) because (spelling)  our (use "our") business partner in China booked us in (add preposition "in") a 5-star hotel so we got to enjoy the breakfast and sauna for free (better to use this).

 6. It was too luxury for us. so I will never forget this business trip

>  It was too luxurious for us so I will never forget this business trip. (put period)

Hello Jeong,

Happy Monday. I am happy that you always write here. Here are my corrections. I hope it will help you improve your skill. Always be careful with your preposition, article, tenses and spelling next time, okay? Have a wonderful day!! ^^,

Teacher Jj