Inst High Energy Phys, Beijing 100039, Peoples R China
; CCAST, World Lab, Beijing 100080, Peoples R China
; Nankai Univ, Dept Phys, Tianjin 300070, Peoples R China
; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
; Fujian Normal Univ, Dept Phys, Fuzhou 350007, Peoples R China
Complete expressions of the (s) over bar bg and (s) over barbgamma vertices are derived in the framework of supersymmetry with minimal flavor violation. As examples, the branching ratios of charmless B decays [B --> K + X (no charm)] and exclusive processes B-s --> gammagamma are calculated with the minimal supergravity assumptions.