Are you sure you other supplier quality and we are the same?委婉的说法该怎么表达?

问题描述:

Are you sure you other supplier quality and we are the same?委婉的说法该怎么表达?
RT,给国外客户的.你确定其它供应商的产品跟我们质量相同?

Are you sure the same product from the other supplier have the same quality as ours?