Skyherb can provide luteolin, apigenin, phloretin, phloridzin, betulin in large quantity with high quality. Skyherb is a professional manufacturer of herb extract in China. Our competitive products are as follow: Apple root extract phloridzin 40% phloridzin 60% phloridzin 80% phloridzin 90% phloridzin 98% Phloretin 70% phloretin 80% phloretin 98%