KISS-C, ceiling lights for office lighting. Illuminating part is achieved based on the traditional grid design, using LED technology and optimizing the structure and anti-glare design, lens and high reflectivity PC molding material built-in to improve the uniformity and efficiency of light. Middle layer equips with a diffuser plate and a prism transparent plate to achieve uniformity of illumination and reduce glare value to less 17 for UGR.