What are the standard offset printing products quality

If you just ask printing at this stage, so there are three criteria: 1. Is there a graphic information outside of the ink. There are three kinds of this often Conditions. (1) wild ink - where there should be no ink in the ink mark, this is usually a PS version not wash clean. (2) paste version, the printed graphic ghosting, this was probably caused by the badly aligned. (3) after the bottom - this is because the printing ink without dry, move the paper (substrates), leading to a piece of paper on the ink rubbed down to a piece of paper. 2. Print out the pictures or words and sign draft (the sample proofing) whether the gap is too big, generally based on whether the reduction degree of ninety percent for the standard. 3. The use of paper is specified in the paper.