The standard test requirements of the resistance test of coated glass are: 1. No defect greater than 3 mm in length.Maximum one defect between 2 mm and 3 mm in length. 2. Maximum five defects between 1 mm and 2 mm in length.No staining of the coating, scratches, or clusters of pinholes greater than 1 mm. 3. When compared with the reference test piece, there shall be no significant color change in both reflection and transmission. This observation shall be made within 20 s. 4. The transmittance measured at 550 nm and 900 nm must vary from the corresponding measured value on the reference test item by no more than 0.03.