客人要求我们签exclusivity ，这个是什么意思？可以签吗？

客人今天刚刚发来这样一封信，我该怎么回复比较好呢？请各位帮帮忙。 Good Morning. Sorry for the late response as we were attending few fairs and things got delayed. We are interested in some of your products. Do you he only this much or you he still more designs? Then few things which we need to inform you is that we are a big organizations with branches in Kuwait, Qatar, Bahrain, Jordan, Labenon, Saudi Arabia, Tunisia, Iran, Iraq, Libya and many stores in UAE. we seek from our suppliers exclusivity for all the products we are buying as exclusivity is one of our brand promise to customers. So we will send you the exclusivity letter and you he to read through the same, sign and stamp the same and send it back to us. Another thing is Child labor restriction letter , this also you will he to sign and stamp, send it back to us.