About all the tools and products, we have a negotiation before.To obtain the better competitive price, MUST to follow the the packing quality standard of 2A.
According to your new requirement, if you need to change the standard to 1S, the factory will have to compute the price of all products again. We predict the price of per product will increase about 20%.
我中间给您加了个MUST,不知道可不可以,我觉得您的意思就是想要求对方执行2A标准,就用MUST强调了一下.