Chromasir's optical grating yog hloov ntawm Waters optical grating, uas tuaj yeem siv nrog UVD xws li Waters 2487, 2489, qub TUV, xiav TUV, thiab lwm yam. tsim cov khoom no. Lawv raug tsim raws li tus nqi pheej yig hloov ntawm Dej, nrog rau qhov zoo tib yam thiab kev ua tau zoo heev.