Lisun Group is a leading manufacturers & supplier of a wide range of high quality & portable colorimeter and photometer for sale at affordable prices. Our Products: •Digital Colorimeter & Illuminance Meter•2D Video Luminance Meter•Luminance Colorimeter•Photometer•Thickness Meter for Phosphor Coating•Pocket Brightness Meter For complete information or to buy our light measurement systems, you can call us on 00852-68852050 or email at Reply to Ad . You can visit our products web page at https://www.lisungroup.com/prolist-id-154.html.