Proper inspection of non-sparking tools is important for user operation safety. For that reason, we built the non-sparking performance test lab that is above the national level. This great test lab is equipped with the spectrum analyzer as well as other indispensable mechanical performance test equipment including the torque tester, tensile strength tester, impact tester, and hardness tester. All the manufacturing processes are closely scrutinized from selection of raw materials to the standard of finished products. The first-rate testing equipment and highly-advanced techniques form the basis of yielding safe products.