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2 All part not allowed to exist rust, crack and poor planting. Each section should be no rust, cracks, plating undesirable phenomena. 4. Standard test conditions shall be 5 to 35 ℃ in temperature and 45 TO 85% inhumidity. Temperature 5 ~ 35 ℃, humidity of 45 to 85% of the standard state tests. 5. Operating temperature range -40 to + 70 ℃. Temperature -40 ~ + 70 ℃ use within the environment.