# MatriChem > MatriChem develops biomaterials for tissue engineering and bioprinting — bio inks, bio resins, nanofibers, and microfibers recreating the extracellular matrix. ## Products - [Collagen Type I](https://www.matrichem.com/products/collagen-type-i.md): Bovine Achilles tendon-derived type I collagen - [GelMA](https://www.matrichem.com/products/gelma.md): Methacrylated gelatin for tissue engineering by extrusion bioprinting - [Ultrasound Breast Phantom](https://www.matrichem.com/products/ultrasound-breast-phantom.md): Realistic ultrasound breast phantom for sonography and biopsy training - [Cytoink — Bioinks, Biomaterials & 3D Bioprinting](https://www.matrichem.com/products/cytoink.md): Bioinks, biomaterials, and 3D bioprinting products from Cytoink — GelMA, SilMA, ready-to-use bioinks, and photoinitiators. ## Optional - [Full catalog](https://www.matrichem.com/llms-full.txt) - [Sitemap](https://www.matrichem.com/sitemap.xml)