All-Signet AG in Diepoldsau is your specialist for industrial signs, labels, foils, markings, front panels and composite plates. From consulting and development to production, delivery and after-sales support, we provide complete solutions from a single source. Whether single pieces, small batches or large series – we deliver tailor-made, high-quality products. Our portfolio includes nameplates, barcode plates, laser engraving, 3D printing, membrane switches and digital solutions. When it comes to signs, it’s all-signet.

Zünd Präzisionsoptik AG and Optivac AG in Diepoldsau combine plan optics, micro-optics and optical coating expertise under one roof. For over 50 years, we have manufactured high-precision compact and micro prisms, filters, mirrors and custom bonding systems for medical technology, industry, metrology, laser optics and telecommunications. Optivac provides 200+ coating processes, from anti-reflective layers to mirror and beamsplitter coatings. With cutting-edge technology and Swiss precision, we deliver prototypes and high-volume production.