To name ones off the top of my head (without looking anything up) we have Great Coasters International (GCII), The Gravity Group, S&S International, and Chance Morgan Rides. These are some of the big players while there are also smaller ride companies that, right now, I can't think of their names. Hope this helps.
Manta is a roller coaster at SeaWorld Orlando.
no
The Intimidator at Carowinds
The tallest roller coaster is Kingda Ka, found at Six Flags Great Adventure in the US.
Kingda Ka - It goes at 128mph.
oone
Cedar Point
Ohio.
top thrill dragster it's max speed is 120mph
The roller coaster was designed and patented by Edwin Prescott of Arlington, Massachusetts on 16 August 1898. It was named by the U.S. patent office as "the pleasure railway." The first design was a simple one which included just a single circular loop. The design caused an uncomfortable shock to passengers as the car entered the loop, so was hardly a pleasure to ride. Subsequently, in 1901 a loop-the-loop centrifugal railway was patented by Prescott. The new roller coaster was more comfortable to ride as it replaced the rough approach to the loop with a gentler curve, and had other modifications to improve the overall ride.
For the average rollercoaster, $15 million (US) and they are becoming more expensive.
The roller-coaster ride was fast, scary and quite exhilarating, leaving us breathless.