including piston, piston ring and cylinder liner. refering the size, diameter, and feature, OEM no. A: Gurantee for the cylinder liner: 1. we strictly adhere to the GB/T1150-93 Criterion 2. send sample for check before delivery B: Packing details: 1. we can design the packing by your requirements but with bigger quantity 2. if need wooden pallets, the customer needs to pay for the wooden pallet charges 3. if no requirements,we offer the Corrugated Carton and vellum paper