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:: The GG-2000 is latest in melting furnace technology, it combines the most advanced digital PID controller with next generation ceramic-composite and high purity graphite materials for the melting chamber and myelin-composite sheathed heating coil. The capacity is WOW 3kg CRUCIBLE, and the PID controller is factory set at the recommended PID values with a 1% or less deviation :: You can change the controller settings if you like, but the settings must be unlocked with a code (this code will come with your unit) :: Also, there is an "auto-tune" function for quick and accurate tuning :: To be sure, there is nothing required by the user, it is already pre-set with the recommended PID values, so you just need to open the box and start to melt metals with laser precision :: BOOM