How to solve the color difference problem of kraft paper?

The problem of color difference in kraft paper has been plaguing the entire industry. So, how should we solve this problem? We clearly tell everyone that in China, it is very difficult to avoid the problem of color difference in kraft paper. For the paper - making industry, it is impossible for the color of each batch of kraft paper produced to be exactly the same. There will always be some color differences, more or less. Since we can't change this essential problem of color difference, we need to learn how to avoid disputes caused by color differences. How to avoid disputes caused by the color difference of kraft paper? 1. If the customer is a long - term purchaser, we should tell the customer in advance that color differences in kraft paper are inevitable. The color of each batch cannot be exactly the same. This is like giving the customer a heads - up. 2. When sending samples to the customer, it may be one batch of kraft paper. But when the customer places an order, it may be another batch. In this case, we should send the customer a sample of this batch of goods again and only ship the goods after the customer confirms. 3. Write the possible color - difference problem of kraft paper in the contract. Both parties should confirm it to avoid unnecessary disputes.