: Likely refers to the diamond concentration or the bonding agent (such as a metal or resin bond) designed for specific hardness levels. Key Applications
Due to the specific nature of the code, this product is not typically found on Amazon or eBay. Authorized channels include: NANIWA DUP 09 CCD E- - 18
Naniwa pumps are delivered with a "Booklet Including Test Record" and "Completion Drawings" unique to each ship. Scribd Documentation: : Likely refers to the diamond concentration or