1. The hole diameter of the rear suspension of the cab is changed from φ 15 to φ 14.5 (December 30)<br>2. Add two φ 16.8 ± 0.1 positioning bolts at the connection between the front connecting beam and the frame of TL series (to be verified)<br>3. After the design trial assembly, the quality begins to verify the trial assembly effect. (not carried out)<br>
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