Premium Zinc Bisglycinate 28%~40% | High-Bioavailability Mineral for Nutraceuticals As an ISO 9001:2015 and HACCP-certified manufacturer (Certificate No. 001HACCP2500422), we supply pharmaceutical-grade Zinc Bisglycinate with industry-leading 28%~40% elemental zinc content. This optimally chelated form delivers superior absorption for dietary supplements…