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...mechanical drawings, topographical maps, etc. The texture is tight and strong, semi - transparent, dull, and low in dust. It has excellent scratch resistance, abrasion resistance and folding resistance. Suit...
... machine is used to point touch screen, and write life test equipment, the machine adopts mechanical structure drives the weight standard constant pressure, the simulation of product point, written test, lif...
...adopts mechanical structure to drive weight standard constant pressure, points, write life test, simulation the product will also test head to switch to the HB pencil hardness test was carried out on the pro...
... to generate a standard and constant pressure, simulating point and write life tests on products. It can also replace the test head with a pencil from Zhonghua HB to test the hardness of the product's sh...
Pencil hardness 1H-6H; Good weather resistance; Good mechanical properties;...