Finally, the optimization quantity of spare parts following exponential distribution are calculated with both this method and analysable method.The two results fit well.
Our main products are VMC machining center, CNC slant bed lathe, CNC and manual toolroom milling machine, high speed spindle, ball screw and other functional spare parts.
Each one is dedicated to finishing the space station — now 81 percent complete — and hauling up supplies and big spare parts that are too big to fly on any other rocketship.