Quality control
All of our bits and screwdrivers are produced to qualify the DIN/ISO standard and were certified with the TUV quality inspection system since 1991. Furthermore, to maintain our products with high-level quality, we introduced Asia's one and only torque test machine made by Schatz in Germany in 1999, which along with three in-house Schatz-certified inspectors, also makes the standard of our bits and screwdrivers superior to the universal specification under strict supervision.