... , during production period, before lamp's final assembling, each lamp we make aging testing 5hours,5hours again after lamp's final assembling, before final package ... each lot. Testing equipment Integrating Sphere is used to test lamp's lumen, consumption. Power factor, input current and Ra indexHi- ... pot tester, It is used to test lamp's Hi-pot from 1000V-4000V. EMC tester, EMI tester. ...