OREANDA-NEWS. National Rating Agency has placed its credit rating on Angstrom LLC on Watchlist with indefinite implications. NRA’s first-time ‘A’ credit rating was assigned to AFG National LLC and extended to Angstrom LLC on Apr. 22, 2013. The latest rating action on the group (the ‘A’ credit rating affirmation with a positive outlook) was on Dec. 25, 2015.