The first commercial space manufacturing application is likely to be ZBLAN, a super pure fiber optic. When made in microgravity it has superior optical properti

The first commercial space manufacturing application is likely to be ZBLAN, a super pure fiber optic. When made in microgravity it has superior optical properties. It's extremely expensive, $450k to $1m per kg. https://www.nasa.gov/mission_pages/station/research/experiments/2421.html https://www.nasa.gov/mission_pages/station/research/experime... https://sites.google.com/site/cmapproject/case-studies/exotic-glasses-and-fibers https://sites.google.com/site/cmapproject/case-studies/exoti...