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我原來郵寄材料是記得寫的是下麵這樣的，請問我現在補材料（要求我補ETA-750B表），請問我應該怎麽寫，謝謝您

USCIS
Attn: I-140
P.O. Box 660128
Dallas, TX 75266

-Don't use that address you mentioned here. When USCIS sent you the RFE, they should have enclosed an envelop in the same mail, and asked you to put your response materials to that envelop and mail it to USCIS. Did you find that envelop?