Guzen Development’s SCP-II: Salmon Collagen Proteoglycan Complex offers benefits for joint and skin health. It has a perfect balance of proteoglycan (35%) and undenatured type II collagen (40%). The extraction method using acetic acid produces highly purified products at a low cost.1547 Palos Verdes Mall, #131 Walnut Creek, CA 94597, www.guzendevelopment.com