H1-B renewing in US Consulate in Berlin Germany

Yili

Registered Users (C)
I\'m going to have a short visit to Berlin Germany. But my H1-B visa stamp has expired recently. Does anyone have experience with visa renewing in US Consulate in Berlin recently? I understand they process such applications. But will they grant the visa stamp within one week? How long is the processing time? What documents do they require? Is there any risk?
 
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