"So light that full range of movement is available. Constructed with emphasis on toxic resistant materials."
The Shotlite Dragonfly set is manufactured by Shotlite. Fairly rare to obtain, it is a great upgrade to the Hummingbird series, and the and versions are particularly good later on. In addition, all the armors increases the user's movement speed by a tiny margin (up to 12% with full set). But the most beneficial one is the Helmet because of the +5% Gun Damage it provides and 4% movement speed as well, and may be a comparable nemesis of Titan IRN HUD, which provides 5% more Gun Damage, but also reduces movement speed by 5%.
The official description is contradictory to its stats - it seems to focus more on Physical than Chemical. Although its Chemical defense is higher than its Thermal defense, unlike most armor sets, so this could be what the description meant.