Machines and machine tools for treatment of materials and for manufacturing in the field of vacuum metallurgy, vacuum heat treatment systems, namely, metal and working forming machines and machine tools; lifting and hoisting equipment, namely, power-operated lifting installations for the transport of goods; pumps, namely, vacuum pumps, pumps as parts of machines; compressors as parts of machines for recovering and recycling refrigerant gases; engines for circulating fluids, other than for lan...