Question

请英语高手帮忙翻译，只用翻译括号里面的话，可以不用翻译原话，只要是同一个意思就可以，谢谢！

因为供应商提供的物料长度不良，我想让供应商分别挑选长度在A区间与B区间的物料各200个，但供应商回复说200个太多了，不愿意挑选那么多，（但我想坚持跟他们说，可以只挑选A和B区间中的任意一个，但数量一定要200个，如果挑选的数量低于200的话，我担心会涵盖不到全部的问题点）。

Answer 1

但我想坚持跟他们说，可以只挑选A和B区间中的任意一个，
但数量一定要200个，如果挑选的数量低于200的话，
我担心会涵盖不到全部的问题点

Yet I'd like to make them understand,
picking any one in the range of A to B is acceptable,
but make sure the quantity should be over 200,
if not, I'm afraid it cannot cover all the problems.

Answer 2

But I would like to insist: any one can be chosen in Section A and Section B; but quantity should be at least 200. I am concerned that quantity less than 200 will not be able to cover all of the trouble points.