Cold Box Seal Sticker Tray at Porto Sorting Belt

Warm candlelight glows across a stainless steel tray holding rows of cold-box seal stickers, positioned on a moving parcel sorting belt in Ribeira, Porto. Late spring window light cuts through the interior space, illuminating the metallic surfaces and casting soft shadows between the separated stacks of pharmaceutical and specimen packaging materials. The belt stretches wide into the background, lined with thermal packaging props and reefer workflow stations. Orange and yellow hues from the artificial light blend with the cool daylight, highlighting the texture of the adhesive stickers and the smooth plastic of the packaging. Shadows lengthen across the floor, marking the transition from day to evening as the logistics operations prepare for the cutoff. A reflection of the tray rim catches the edge of the warm glow.