ซื้อเวชภัณฑ์(ยา) Sodium chloride 3% plastic bottle 500 ml , Sterile Water for injection 1000 ml , Dextrose 5% 0.45% Sodium chloride injection 500 ml , Dextrose 5% in 0.3% Normal saline solution 500 ml , Dextrose 5% 0.18% Sodium chloride injection 500 ml โดยวิธีเฉพาะเจาะจง