英语翻译根据工程师的评估,我们需要重新设计一个适合KK型号产品的弧形按钮,由于此次开模费大约需要1万美金,开发周期估计要

According to the engineer's evaluation, we need to design a suitable arc button for the KK models products.
Due to the mold fee of about $10000, the development cycle is estimated to be about 3 months, so we want to confirm again whether you really interested in the arc button.
We will complete the button-model as soon as possible to you to confirm.
Please notedthat once confirmed, the shape and size of the button in the new development should not be modified.