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5 สิ่งจำเป็น ที่ควร รู้ เกี่ยวกับ การรับรอง
??? ???? ????????? ???? ?????????? ?? ????? ?????????????? . ?????? ????????????? ??? ??????, ??? {??????? 5 ?????????? ??????? {??? ????????????? ???? ?????????????????????? ????????????????? ??? ?????????? ?????????????????? ????????? ??????????????????? ????? ?????? ?????? {???????? ?????????????? ?????? ??????????????? ??????????????? ?