"Materials: The main materials used in hollow gelain capsule production is gelatin and colorants. Gelatin: we choose the best bovine bone gelatin as material from the most famous bone gelatin supplier both from overseas or domestic.The material meets main pharmacopeia as USP,EP. BSE and TSE free certificate by authenticated organization can be provided. A strict preliminary chemical and microbiological tests are carried out before gelatin is released for hollow gelatin capsules production. Colorants: The use of colorants as additives is a significant factor to hollow gelatin capsule manufacturer. For consumers,approved edible non-hazardous coloring agent ensure their acceptability. For manufacturer,high-quality colorants assist in ensuring batch-to-batch uniformity of products." http://www.dscapsules.com/