Crane Chemicals - Earth ???? - Suicide Squad: Kill the Justice League

An American chemical company. 

Luthorcorp - Earth 2 - Suicide Squad: Kill the Justice League

A multinational conglomerate spanning technological, media, scientific and medical research, Luthorcorp was owned by Lex Luthor until Brainiac invaded Earth 2 and wiped out the world. 

Luthor would eventually abandon Earth 2 three years later, with the help of Task Force X, and seek asylum on Earth 1. There, he assumed the identity of the late Lex and took over running Lexcorp. 

WayneTech - Suicide Squad: Kill the Justice League

Officially partnering with the Justice League, WayneTech supply the team with state-of-the-art advancements to the Hall of Justice, the Watchtower and their tech; most notably the Flash's current suit.