Summary: Commercially available electrochromic (EC) windows are based on solid-state devices in which WO3 and NiOx films commonly serve as the EC and counter electrode layers. respectively. These metal oxide layers are typically physically deposited under vacuum. a time- and capital-intensive process when using rigid substrates. https://www.bekindtopets.com/hot-find-Synovex-One-Grass-Extended-Release-Implant-10-Dose-special-find/