LISUN was certified by ISO9001. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international standards. All products passed CE certificate and authenticated by the third party lab. Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, LED Test Instruments, EMI Receiver, Surge Generator and Environmental Test Chamber. LISUN’s customers are from more than 150 countries and regions which includes UL, SGS, NIST, NIM, UNDP, Philips and OSRAM.