What is the difference between Standard, Industrial, and Laboratory EX6 Extruders?

Standard EX6: You can see all the basic specs here.

Industrial EX6: Has a nitrated barrel and screw for increased longevity when using abrasive materials.

Laboratory EX6: Features a stainless steel exterior, nitraded screw and barrel, a medical-grade power supply, a touchscreen HMI, an upgraded brushless servo motor, control board, and updated PIDs. The upgraded motor and PIDs also provide increased data logging options for temperature and motor speed.