Lesson learn：1、协调技术中心对尿素管路三通增加识别色标或

Lesson learn: 1, technical coordination center line tee urea increased recognition of color or adjust the diameter of the embodiment taken error protection. 3, incoming inspection, aeration turned confirmation test;

Lesson learn:1, coordination technology center on the urea line three-way increase identification color mark or take pipe diameter adjustment to implement error prevention. 3, into the factory inspection to increase the ventilation through confirmation inspection;

Coordinate the technical center to add identification color code to the tee of urea pipeline or adjust the pipe diameter to prevent mistakes. 3. The incoming inspection increases the confirmation inspection of ventilation conduction;