The type axis of UV-90 segmentation classifies products into four distinct configurations, each addressing specific operational constraints. LED‑based UV‑90 units, comprising about 40 % of the market, offer superior energy efficiency and longer service life, making them the preferred choice for continuous‑run industrial lines. Mercury‑vapor UV‑90 systems, holding roughly 30 % of sales, remain dominant in legacy installations where high output power and broad spectral coverage are required, despite higher maintenance costs. Portable UV‑90 devices, accounting for 20 % of the market, serve field applications such as on‑site equipment sterilization and mobile water treatment, where flexibility outweighs raw power. Fixed‑installation UV‑90 models, representing the remaining 10 %, are engineered for large‑scale facilities with integrated safety enclosures and automated control interfaces. Together, these types define the market taxonomy, guiding manufacturers' product‑development strategies and informing investors about the relative growth potential across technology families.