Official document binding standard: left binding, neat and firm, no page drop; The incision is smooth, up to standard and accurate in quantity.

(a) no multiple pages, no missing pages, no upside down, no mixed loading.

(2) The cutting specifications meet the standards, and the error is not more than 65438 0 mm; Not crooked or oblique, the four corners are at right angles to each other.

(three) clean and tidy, no corners, no knife marks, no stubble, no defects.

(4) The packaging should be smooth, the nail spacing should be appropriate, there should be no bad needles, missing nails and heavy nails, the glue should not fall off the page or stick to the surface, and the glue mouth should not exceed 5 mm ..

Binding position in document binding: the binding position is 1/4 above and below the book center of two nail saws, with an allowable error of 4 mm