OEM (original equipment manufacturer). Originally, OEM referred to a company which originally designed a given product, which was then this company sold to other companies to rebuilt or rebrand and resell.
but as time passing. now, OEM is more frequently used to describe those companies in the business of remanufacturing or rebranding a manufacturer's products and selling them to end customers.
OEM castings, means manufacturers make patterns mould toolings according to the originally designed products drawings or samples of the importing company, machining the castings accrding to the importers's drawing and request without modification. and exporting these OEM castings to the vendors back, Alternatively, it may incorporate and bundle the vendor's products with its own technology for resale.
Vendors or say OEM castings importers needs of this type of OEM Castings. At times, major OEM castings vendors will themselves enter OEM arrangements to supplement their product lines.
take OEM Fire hydrant for example, the OEM fire hydrant manufacturers or say OEM suppliers, typically take vendor's technology into its own applications to make the OEM fire hydrant according to importers drawings, samples or patterns.and assemble the fire hydrant according to vendors' request. and take hydraulic testing according to vendors request. then export these OEM fire hydrants to the vendors for they resale to their end customers.
by the way, the OEM castings suppliers must sign an OEM agreement with vendors to get the production license for OEM making this product to prevent from any violent of this OEM products' copyright.
Now in China. OEM casting manufacturers can make OEM cast iron pump parts, OEM cast iron pump bowl, OEM cast iron valve parts, OEM cast iron motor parts,OEM cast iron elevator parts, OEM cast iron auto parts, OEM Fire hydrants And OEM bench vises etc. and china export lots of OEM products to USA.EUROPE,JAPAN, SOUTH KOREA.CANADA. etc.
OEM is also help China manufacturers improved their manufacturing knowhow and manegment system. and hope China OEM industry can change from OEM castings to OEM ready for use finished products.