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Difference between windshield of folding shed and rubber windshield of railway passenger cars.
Rubber windshield. Developed by CNR Sifang Vehicle Research Institute, the patent document is online.

Early iron windshields. Air leakage and rain leakage, domestic new cars abandoned.

Folding shed windshield. The technology of German Hubner company is introduced, and it is produced by Changzhou Jinchuang, Qingdao Aotemei and Qingdao Zhuo Zhan in China.