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2. In the range of 50 ℃ of general vegetable oil, especially olive oil and crawler oil, the physical and chemical program to reach the viscosity of 50 ℃ according to the calculation of Engler device.
2. In the range of 50 ℃ of general vegetable oil, especially olive oil and crawler oil, the physical and chemical program to reach the viscosity of 50 ℃ according to the calculation of Engler device.