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In order to ensure that the waxy asphalt paint at the bottom of the box has good anti-corrosion performance, give full play to its excellent construction performance, and meet the quality requirements of the box car for the varnish at the bottom of the bo

Container pretreatment is one of the key technologies in container manufacturing and the first step in container manufacturing. Pretreatment quality is directly related to the manufacturing quality and service life of the container, so all the container o