First of all, we should make clear the purpose of proofing, which is: 1, the accuracy of graphic content. 2. Accuracy of color. After proof printing, proofread graphics and text, proofread color difference. If there is any mistake, modify the picture and text and adjust the color. Generally speaking, proofing is necessary.

There are generally two forms of proofing: 1, digital proofing, no plate making, low cost, no problem with graphic proofreading, but there are errors in color. 2, printing machine proofing, the best effect, generally for products with higher grade requirements, but must be plate-making, high cost, customers have high requirements for color, it is necessary to print on the printing machine. About the cost, make it clear to the customer, and the customer will generally understand.

If the 60P material is full-color printing, the digital proofing should not exceed 100 yuan, and the printing machine proofing should be at least 2000 yuan.

I hope it helps you!