What mean by hlp 68 stands oil name?

HLP 68 refers to a type of hydraulic oil commonly used in industrial machinery and equipment. The "HLP" designation indicates that it is a high-pressure hydraulic oil, while "68" denotes its viscosity grade, which is measured by the ISO (International Organization for Standardization) scale. This oil is formulated with additives to enhance its performance, including anti-wear, anti-oxidation, and anti-foam properties, making it suitable for various applications in hydraulic systems.