Material: copper plating Bend width: 250mm Opening: 22mm Spacing: 130-170mm.★Comply with the requirements of the CQC32-432421-2021 certification rules, according to the standard: GB 18145-2014 Ceramic plate sealing nozzle GB 25501-2019 Water nozzle water efficiency limit value and water efficiency grade. ★Comply with GB 25501-2019 "water efficiency limit value and water efficiency grade of water nozzle" ★According to YS/T 482-2022 "copper and copper alloy analysis method spark discharge atomic emission spectrometry" GB/T 5231-2022 Grade and Chemical Composition of Machined Copper and Copper Alloys ★In line with GB 4806.9-2023 "national food safety standards for food contact with metal materials and products", GB 31604.49-2023 "national food safety standards for food contact materials and products multi-element determination of multi-element migration determination".