I like that they use American made chips. I have never looked into Alta LEDs before.
Taken from LEDmagazine
"Alta LED uses a patented four stage coating process of raw elements over Alta Diode Technology to produce a high intensity array with full spectrum lighting capabilities. Alta Blue Dies are combined with Alta patented Phoquan Discharge Array (P.D.A) liquid materials cured to an Alta Copper Substrate C.O.B. (Chip on Board) style package to achieve full spectrum lighting with high intensity results. Alta blue dies are covered with a four-stage process after die attaching occurs. Each layer of raw elements are then extracted from various Alta LED patented ingredients. Full spectrum PDA occurs when Alta dies react with each layer of coating, exciting and creating photons to create full spectrum light. Each layer is critical to creating and maintaining wavelength, intensity, and color correction.
Alta dies are the only constant current dies capable of sustaining the reaction between the layers and producing large amounts of full spectrum light without pulse modulation. There are only eight worldwide die technologies. The other seven use pulse technology due to the fact that their dies lack the technology and endurance to handle high constant current as a driving force. Alta LED has mastered this, creating a never discovered and now introduced type of LED chip."
https://www.ledsmagazine.com/ugc/2014/09/30/alta-led-unveils-new-website-to-promote-full-spectrum-led-array-technology.html