German exports have risen slightly over the past three months,although they're still well below pre-financial crisis levels. The port city of Bremen has traditionally been an important center for shipping and trade. More than 60,000 people here work in the logistics industry.Our reporter Joachim Eggers traveled to the Hanseatic city,looking for evidence of an imminent economic recovery. The trail led him to the Lexzau company,a transporter of chemical products,as well as Röhlig,a German firm which has opened new commercial offices in Asia and is now operating there under the brandname Blue Tiger .