Inspection of finished glass products. In addition to the requirements of the flat glass, it should also check the processing quality, whether the specification size can be standardized, the processing accuracy and the clarity of the glass bottle pattern can meet the requirements, and the edge does not agree to be damaged.

Inspection of glass plates. Appearance quality is the first to reflect the flatness, to see if there are any quality defects such as bubbles, impurities, scratches, lines and fog spots. The glass with such defects will be deformed during use, which will reduce the transparency of the glass and machinery. The strength and thermal invariance of the glass are not suitable for engineering use. Because the glass is a bright object, the quality black and white can be discerned through visual inspection at the time of selection.

The appearance quality of the hollow glass brick does not allow cracks, and the glass blank does not allow unclear unmelted materials, and does not allow welding and poor bonding between the two glass bodies. The concave surface of the large surface of the glass brick should be less than 1 mm, and the convexity should be less than 2 mm. The weight should conform to the quality specification. There is no quality defects such as warpage and notch, burrs, etc., and the angle should be straight. The tile body should not have lamellar streaks that occur in the corrugations, bubbles, and inhomogeneities in the glass blank.