Following the cie standard, hopoo is engaged in producing LED test instruments and other lamp test equipments, for example, photometer, colorimeter, color temperature tester, luminosity test equipment, photoelectronic test system, photocolorimeter, spectrophotocolorimeter, spectral test system with integrating sphere, goniophotometer, LED light intensity distribution test system, luminosity disitribution test system, High power LED test equipment, LED aging & attenuation tester, AC/DC power supply, digital power meter, multiplex temperature tester, digital torsion tester, EMC test system, etc. There are 6 categories with hundreds of products.