Weißer Kugelschreiber Mockup im Industrial-Look | stremmer werbemittel

Photo-real product mockup of a white pen with "stremmer werbemittel" logo printed at center chest. Mockup style: warehouse / industrial, tech blue logo palette. Studio-grade photography, sharp focus, natural fabric texture / mug ceramic / paper grain. Magazine-quality merch shot, no watermarks. Logo is generic placeholder typography — no real-brand marks. Realistic product proportions. Target search intent (rendered visually, no on-image text): "stremmer werbemittel" (de).