DoNews, March 7 (Ding fan) - according to foreign media reports, Tesla’s factory outside Berlin is struggling with quality problems after obtaining the final approval to start production on Friday. The source said that due to the insufficient quality of early production, especially the paint workshop, the first delivery of model y may be delayed by two to three months. Musk once said that after the Berlin plant is fully put into operation, the annual production capacity is expected to reach 5...