此外我还需要时间来树立对贵方产品质量的信心。
Besides, I need time to build up my confidence in the quality of your stuff.
我从来没有因为产品质量而需要退货或退款。
I never return the product or refund due to product quality.
我们需要提升的不仅是产品质量，而且还有营销理念。
We need to promote not only quality of the product but also our marketing concept.
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