Please find below some of the value our product offers -- we understand that you have customer targets tooi. maintenance free and user friendlyii. single digital control module in the panel covered with 5 years warrantyiii. quick service guaranteed - we give a 3 hour engineer- reach or service free written warranty for our products - we know that money does not grow on trees for you eitheri. series inverter digital panel control more accurate and more reliable (power factor is greater than 0.98 at all loads which means you pay for what you use only)ii. guaranteed written performance clarity with best performance efficiency to increase profitability