HST is established in 2009, owns more than 400 square meters of researching and office space, more than 12000 square meters factory.All machines passed the European Union CE authentication，American FDA certificate and are certified to ISO 9001. Products are sold to USA, Canada, Australia, Europe, South east Asia, Africa etc, more than 120 countries and areas, and supply OEM service for more than 20 manufactures.

AbstractThe HST CPJ3015 is a universal vertical profile projector for the length, angle, contour and surface shape of mechanical parts: a Ø312 screen, a 10X standard objective with 20X, 50X and 100X options, 24V/150W halogen transmitted and 21V/150W halogen reflecting illumination, and the DC-3000 Digital Readout for two-dimensional measurement of point, line, circle, angle and distance. It inspects all kinds of surface and outline of complicated work-pieces - cam, screw thread, gear and milling cutter - with a profile measurement error of less than 0.06%, projection accuracy of ≤±0.06% fo