High-Quality Food Additive Amino Acid L-Cystine CAS 56-89-3

High-Quality Food Additive Amino Acid L-Cystine CAS 56-89-3. High Purity Content: Active substance content exceeds 90%, with specification ranging from 98.5% to 101%. Natural Resource Source: Derived from natural resources as a pure amino acid food additive. Comprehensive Customization: Offers full, minor, and flexible customization based on samples or designs. Strict Quality Inspection: Undergoes rigorous visual and function inspection before factory departure. Long Shelf Life: Maintains quality for over 12 months when stored under normal conditions. Flexible Payment Terms: Accepts USD or CNY via T/T, L/C, or D/P payment methods. Global Shipping Support: Provides sea or air transport options with tracking from factory to delivery. Manufacturer Direct: Direct sales from a Henan-based manufacturer with industry and trade integration.