Diaminy PLLA Screw Threads for Collagen Support | Bag of 50pcsDiaminy is a top PLLA screw threads supplier with multiple international certifications and more than ten years of production and sales experience. Through strict production control and quality inspection, it provides buyers with high end PLLA screw threads. Made with imported polylactice acid raw materials; Owning thousands of GMP standard production workshops; Gamma ray and EO sterilization before packaging; Manual quality inspection;