1.Meet EU standard 2.Factory directly supply 3.253.7nm,185nm 4.OEM service 5.304# stainless casing Details:1.UV sterilizers use the 304# stainless steel inside and outside.2.The main internal and external are polished to enhance the UV irradianceAssembling with the high purity quartz tube, matching with the appropriation uv lamp tube for water treatment, sterilization strong, long time, stable ...