Indians customer came our factory to test the cz interchange purlin roll forming machine

Recently, our factory came several Indians, they came our factory to test the cz interchange purlin roll forming machine themselves. One month ago, two of their colleagues came to our factory, they said they are interested in our cz interchange purlin machine, so they want to have a check of our machine and our factory.
One of them is the engineer, he is very professional, he has 30 years experience of the roll forming machine technology. After he checked our machine, he said our cz interchange purlin machine quality is very good. But because our machine adopt he pre-cutting type and they want their machine be the post-cutting type, so if we want to cooperate with them we have to change our machine be the post cutting.
Because we are very professional forming machine manufacturer in Botou, so we agreed it. After they came back India, they transferred the deposit, we agreed to delivery the machine for them within 15 working days. Because we have the ready-made rollers, ready-made machine table so we are sure we can delivery this machine within so short a time.
After the test of our machine, they find our machine quality is very good, and we agreed to send our engineer to their factory to adjust the install the machine for them. They said they will give other machine orders in the no far future.