The 19L stainless steel storage drum suits medium-batch transfer and storage of electronic photoresists and high-purity reagents. Spin-formed in one piece from 304 stainless steel, the wall is light yet structurally sound. Acid pickling and passivation forms a stable protective film on the inner wall, effectively blocking metal ion leaching and protecting the purity of electronic materials. The brushed outer surface resists scratches and wipes clean easily, meeting cleanroom cleanliness standards. An integrated side handle aids two-person handling, and the small-aperture seal blocks light and oxygen — suited to pilot production and batch dispensing, it is a medium-size high-purity material storage container for the semiconductor industry.