Duwani Mechanical Products Duwani Mechanical Products was a droid manufacturing company active during the time of the Old Republic . Founded well before the Gank Massacres of 4800 BBY , the company specialized in the production of utility and astromech droids , but it also produced various models of rugged and utilitarian probe droids , protocol droids , mining droid s , and battle droids . Duwani remained in business throughout conflicts such as the Jedi Civil War , the Dark Wars , and the Great Galactic War , and two of its products — the T3 - series utility droid T3 - M4 and the T7 - series astromech droid T7 - O1 — played pivotal roles in galactic events during their lifetimes . However , Duwani eventually went out of business sometime before the Clone Wars , and their products were rarely seen outside of private collections by the time of the New Republic . History . A droid manufacturing corporation that also produced computer systems and droid repair equipment , Duwani Mechanical Products was founded well before the year 4800 BBY , when they were commissioned by Supreme Chancellor Vocatara to produce the juggernaut war droid to aid the Republic ' s rocket - jumper corps in the conflict known as the Gank Massacres . In the centuries that followed , Duwani became one of the most successful companies in the droid market alongside the Czerka Corporation and the Aratech Repulsor Company , and they maintained their position in the decades before 4000 BBY . They continued to produce utility droid s , mining droid s , and other models throughout the next several centuries , surviving the Mandalorian Wars , Jedi Civil War , and the Dark Wars — a series of conflicts that occurred in the decades after 4 , 000 BBY . Duwani acquired the T1 - series trademark from Kellenech Technologies after their LB - series bulk - loading droid fell out of popularity over a century before the Great Sith War , and they used it for their flagship T1 - series utility droid . Duwani ' s T3 - series utility droid , which went into production sometime before 4086 BBY , was one of the earliest predecessors to the astromech droid , and the company continued to improve upon the T3 - series over the next century . The T7 - series astromech droid was a model offered around a century after the Dark Wars , and droids of similar design were common throughout the galaxy during the Great Galactic War between the Republic and the Sith Empire . In the years after the Mandalorian Wars , pilots began to retrofit utility droids with starfighter interface package s , allowing their droids to plug directly into their ships , though Duwani did not officially endorse such modifications . By the time of the Republic ' s reorganization into the Galactic Empire at the end of the Clone Wars , Duwani had long been out of business , and models such as the T3 - series were rarely seen outside of private collections by the time of the New Republic . Products . The company ' s droids were known for their utilitarian and minimalist design , but even their early models were durable and efficient . In the years before the Great Sith War , a conflict that pitted various Sith organizations against the Galactic Republic , Duwani produced the humanoid 3DO protocol / service droid , though the price had decreased to 1 , 500 credits by the time the Jedi trainee Andur Sunrider purchased A - 3DO several years before 4 , 000 BBY . Around the same time , Duwani offered the UniSlice — a compact device that jammed electronic systems while a low - power energy torch literally sliced through locking mechanisms — for 2 , 000 credits , as well as the Breather - 1 , a breath mask costing 150 credits . One of their earliest products was the juggernaut war droid , a combat model designed specifically as a remote resupply and combat droid for the Republic ' s rocket - jumper corps . The droids became a common sight on the Republic ' s capital of Coruscant , serving as part of the planet ' s defense forces , but that ended when the HK - 01 assassin droid reprogrammed many juggernauts during the Great Droid Revolution of 4015 BBY . Most juggernaut war droids had their intelligence matrices removed , and production of the droids ceased as many active units were retired . Another droid produced by Duwani in the years before the Mandalorian Wars was the popular DP - 2 probe droid , a large ovoid model intended for use by scouts and explorers in the deep of space . The KM1 mining droid was a crab - like model that saw great use in the Outer Rim Territories at mining complexes such as the Peragus Mining Facility . With the production of the T1 - series , Duwani pioneered the new class of utility droid , and subsequent models such as the 3C - series , IT - series , and T3 - series utility droid built on the T1 ' s success . Duwani ' s utility droids were easily recognizable by their four wheeled legs , flat rotating head , and short stature . T3 - M4 was a T3 - series droid who became a companion of the famous Jedi Revan during the Jedi Civil War , and he continued to serve aboard Revan ' s ship the " Ebon Hawk " even after Revan disappeared , working alongside Revan ' s ally Meetra Surik during the Dark Wars . In the years after the Dark Wars , Duwani continued to refine and produce their droids , eventually shifting from utility droids to the more starship - capable astromech droids , and their T7 - series astromech droid went into production around a century after the Jedi Civil War . Another Duwani droid , the T7 - series astromech T7 - O1 , was in operation for more than two centuries after his creation , and he became a companion of the legendary Jedi Knight known as the Hero of Tython as the Galactic War broke out between the Sith Empire and the Republic in 3642 BBY . Behind the scenes . Duwani Mechanical Products was first mentioned in the 1996 reference guide " Tales of the Jedi Companion " , and reappeared in 2006 ' s " The New Essential Guide to Droids " . T3 - M4 , a companion character in the video game " " and its sequel " " , was identified as a Duwani product in the 2008 " Knights of the Old Republic Campaign Guide " . The " Scavenger ' s Guide to Droids " further expanded on the company and their products , and the Jedi Knight companion T7 - O1 in the MMORPG " " was later confirmed to be a creation of Duwani Mechanical Products in the 2012 guide " " .