英语翻译真的非常抱歉,接近年末,工厂已经开始疯狂的赶制大货,我们的样衣已经陆续开始安排,但是很多辅料拉链和织带都需要订做

We feel really sorry to inform you that our [ clothes? dresses? garment? ] samples will be late in delivery to you.
This is due to the fact that now is the end of the year, and the factory has started its full gear in manufacturing [clothes? dresses? garment] for large orders and customers.
We have arranged for the samples to be made according to the schedules. However, since these samples need accessories such as zips, and the manufacturing and dyeing of the belts (织带?) need cooperation from other suppliers, we are facing the time constraint. So we request your understanding of the possible delay in supplying you the samples.
Thank you for your kind understanding.