你好，之前我们都是按照你的要求下单的，如果你们想要换windows系统

Hello, we are before you in accordance with the requirements under a single, if you want to change the windows system, and one-sided display, then you need under the new order, our machines are customized according to customer requirements, we not here to deal with the return of goods, it is difficult secondary sold to other customers. We can only give you orders after discounts. I hope you can clearly tell me your demand for the product, after orders, we will not have problems not suitable. Thank you

Hello, before we are in accordance with your requirements to place orders, if you want to change windows system, and single-sided display, you need to place a new order, our machines are customized according to customer requirements, our side is not good to handle the returned goods, it is difficult to sell out to other customers. We can only give you a discount on your later order. I hope you can tell me clearly your demand for products, after the order, there will be no inappropriate problems. Thank you

Hello, we have all placed orders according to your requirements before. If you want to change windows system and single-sided display screen, you need to place new orders. Our machines are customized according to the requirements of customers. It is difficult for us to handle the returned goods and sell them to other customers again. We can only give you a discount on later orders. I hope you can clearly tell me your demand for the products, and there will be no unsuitable problems in the subsequent orders. Thank you