Sunnyv said:"go forward with confidence", it is right, frankly speaking I lose my confidence at first, in that night my boss took me home and told me it was a chance for me to learn, it is exact, so now I am ok, yesterday I do a big improvement in machine and I believe it will give us big benefit, so I think confidence comes from doing right thing and getting rich experience, how do you think about? No matter what happen in the future, I will do it all the time.