For the main weapon manufacturers in Borderlands 2, namely Bandit, Dahl, Tediore, Jakobs, Maliwan, and Hyperion, it's easy to tell how they affect weapons. Bandit gives weapons bigger mags, Dahl has it's unique burst fire, Tediore has exploding reloads, Jakobs has a "fire as fast as you want" mode, Maliwan features increased elemental chance and damage, and Hyperion features a "more accurate as you fire" ability.
What I'm curious is to how these weapon manufacturers affect items like shields, grenade mods, and artifacts. Is there a certain attribute that is tied with them to these items?