Question: Where is the company, which built the roller coaster Comet, based?

Context articles: Top Thrill Dragster
Millennium Force
Comet (Hersheypark)
Philadelphia Toboggan Coasters
Tonnerre de Zeus
Cyclone (Revere Beach)
White Cyclone
Maverick (roller coaster)
Corkscrew (Valleyfair)
Leviathan (roller coaster)

Top Thrill Dragster is a steel accelerator roller coaster built by Intamin at Cedar Point in Sandusky, Ohio, United States.
 It was the sixteenth roller coaster built at the park since the Blue Streak in 1964.
 When built in 2003, it was the first full circuit roller coaster to exceed 400 ft in height, and was the tallest roller coaster in the world, before being surpassed by Kingda Ka at Six Flags Great Adventure in May 2005.
 Top Thrill Dragster, along with Kingda Ka, are the only strata coasters in existence.
 It was the second hydraulically launched roller coaster built by Intamin, following "Xcelerator" at Knott's Berry Farm.
 The tagline for Top Thrill Dragster is "Race for the Sky".
Millennium Force is a steel roller coaster built by Intamin at Cedar Point amusement park in Sandusky, Ohio, United States.
 It was the fourteenth roller coaster to be built at the park since Blue Streak opened in 1964.
 Upon completion in 2000, Millennium Force broke six world records and was the world's first Giga Coaster, a roller coaster that exceeds 300 ft in height and completes a full circuit.
 It was briefly the tallest and fastest in the world until Steel Dragon 2000 opened later the same year.
 The ride is also the third-longest roller coaster in North America after The Beast at Kings Island and Fury 325 at Carowinds.
 It was the first roller coaster to use a cable lift system rather than a traditional chain lift.
 The coaster has a 310 ft , 45-degree lift hill with a 300 ft drop and features two tunnels, three overbanked turns, and four hills.
 It has a top speed of 93 mph .
Comet is a wooden roller coaster at Hersheypark in Hershey, Pennsylvania.
 It is located in the Hollow section of Hersheypark, next to Skyrush.
 Built in 1946 by the Philadelphia Toboggan Coasters (PTC) of Philadelphia, Pennsylvania, the coaster features a double out and back track layout.
 When built it was jointly owned by Hershey Park and PTC.
Philadelphia Toboggan Coasters, commonly referred to as PTC, is one of the oldest existing roller coaster manufacturing companies in the world.
 Based in Hatfield, Pennsylvania, it was established in 1904 by Henry Auchey and Chester Albright under the name Philadelphia Toboggan Company.
 The company manufactured carousels, wooden roller coasters, toboggans (roller coaster cars) and later, roller coaster trains.
Tonnerre de Zeus is a roller coaster at Parc Astérix in Plailly, France.
 Opened in 1997 and built by Custom Coasters International, it is as of today the 2nd longest wooden coaster in Europe, after Colossos, with a track length of 1230m (4044 feet).
 This coaster is also the second wooden roller coaster built in France after Walygator Parc's "Anaconda", and the second massive roller coaster of the park after "Goudurix", which was built since the park's opening in 1989.
 These two roller coasters were followed by "la Trace du Hourra" in 2001, and "OzIris" in 2012.
 No other wooden roller coaster was built in the hexagon until Walibi Rhône-Alpes' "Timber" in 2016.
The Cyclone was a wooden roller coaster that operated at Revere Beach in Revere, Massachusetts, from 1925 until 1969.
 When Cyclone was constructed, it was the tallest roller coaster ever built, as well as being the first roller coaster in the world to reach 100 ft in height.
 In addition to being the tallest roller coaster of its day, some also claim that it was the largest and fastest roller coaster in the world, with a length of 3600 ft and top speeds between 45 and 50 mph (some dispute the speed record claim and instead award that honor to the Giant Dipper).
 Cyclone held the title of world's tallest roller coaster until 1964 when it was surpassed by Montaña Rusa at La Feria Chapultepec Mágico in Mexico City, Mexico.
White Cyclone (ホワイトサイクロン , Howaito Saikuron ) is a wooden roller coaster at Nagashima Spa Land in Mie Prefecture, Japan.
 At 1700 m in length, White Cyclone is the third longest wooden roller coaster in the world, and is the longest wooden roller coaster outside of the United States.
 Despite its length, White Cyclone is still considerably shorter than the 2479 m Steel Dragon 2000, the world's longest steel roller coaster, which is also at Nagashima Spa Land.
 In addition to being the third longest wooden roller coaster, White Cyclone is the seventh tallest wooden roller coaster in the world and the fourth tallest wooden roller coaster outside the United States.
 A single ride on the White Cyclone costs ¥1,000 (approximately $9 USD), and the ride is restricted to those individuals above 1.3 m in height; and those individuals under 54 years of age.
Maverick is a steel roller coaster built by Intamin at Cedar Point in Sandusky, Ohio, United States.
 It was the seventeenth roller coaster built at the park since Blue Streak in 1964.
 It is notable as being the 500th roller coaster designed by German engineer Werner Stengel and the first roller coaster featuring a Twisted Horseshoe Roll.
 Maverick's US$21-million price tag makes it Cedar Point's fourth most expensive roller coaster, behind Millennium Force, Top Thrill Dragster, and GateKeeper.
 The 4450 ft course makes it the fourth longest roller coaster at Cedar Point.
Corkscrew is the name of a roller coaster at Valleyfair in Shakopee, Minnesota featuring one vertical loop and two corkscrews.
 Built in 1980, Corkscrew was planned to reflect the design of its sister roller coaster Corkscrew at Cedar Point.
 It is notably one of the first roller coasters to feature a double corkscrew, as well as a vertical loop.
 The main differences that the Valleyfair model has is the addition of a finale helix and the omission of the camelback before the loop.
 Until the hypercoaster Wild Thing (the fifth highest and fastest roller coaster in the world at the time it opened in 1996), Corkscrew was the only outdoor all-steel roller coaster in Minnesota.
 Corkscrew is currently the only roller coaster at Valleyfair with inversions.
 The coaster's track was painted blue when it open in 1980 but was repainted orange and yellow in 2011.
Leviathan is a steel roller coaster in the Medieval Faire section of the park at Canada's Wonderland in Vaughan, Ontario, Canada.
 It is the first roller coaster designed by Swiss firm Bolliger & Mabillard to exceed a height of 300 ft , putting it in a class of roller coasters commonly referred to as "giga".
 At 5486 ft long, 306 ft tall, and with a top speed of 92 mph , Leviathan is the tallest and fastest roller coaster in Canada.
 s of 2015 , Leviathan is ranked as the eighth-tallest, and the eighth-fastest roller coaster in the world, and the third-tallest traditional lift-style coaster in the world.
 It was the 16th roller coaster to be built at Canada's Wonderland, and the ride's track was completed in February 2012, with the first test run being completed on 15 March 2012.
 The coaster opened to season pass holders on 27 April 2012, and to the general public on 6 May 2012.