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David stays with the machine tool business after the adding machine division is sold.Partner of rockford tool company 1909.General manager of both rockford tool comapny, and.Rockford milling machine company 1911.President of the new sundstrand company 1914.The original author of this document.
We are a large-scale joint-stock enterprise integrating scientific research, production and sales.Our leading products have crushing equipment, sand making equipment, mobile crusher, etc., Each type of product is with complete specifications. All products have passed ISO9001, CE and GOST international quality system certification.