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| 只知道L-B1,Specialized Knowlege category,你是file I-129 petition?If so, supporting documents or evidence of us company may include: incorporation certificate, financial statements, employment offer to you, job duties/description。For you, provide evidence of your qualification, including your degrees/certification current status etc. Be orgnaized and well prepared. If not your case, better consult with a business immigration professional. | 
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