High Penetration Rate Core Barrel RockReamingShells for Dia 

Product Description Reaming shell are also our main products, specifications as follows:  Description  BQ,NQ,HQ,PQ  Quality  High  Port of shipment  Shanghai  Delivery time  Quantity  OEM/ODM  Customization Service Provided Product show Company Information   Packaging & Shipping   FAQ Q1: Wonder if you accept small orders? A1: Do not worry. Feel free to contact us .in order to get more orders and give our clients more convener…