In 1654 in Magdeburg, Germany, scientist Otto von Guericke conducted the famous Magdeburg hemispheres experiment utilizing the vacuum pump he invented. Two copper hemispheres with mating rims were placed together and sealed with grease, the diameter of which was around 14 inches (35.5 cm). Then using his vacuum pump, a couple of valves, and hoses, they pumped out all air from inside the resulting globe. Two teams of eight horses each were attached and began pulling in opposite directions, they were unable to pull the two hemispheres apart. The Magdeburg hemispheres experiment was designed to demonstrate the concept of atmospheric pressure, opening a new chapter in the vacuum field.
Hokaido is the international leader in the field of vacuum technology. The company was one of the world's first vacuum equipment manufacturers. Along the way, the company has grown in strength and become an international leader, with more than 60 modern, highly- equipped, first-class, sub-divisions.