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..., automatic circulation, no pollution; 2, surface treatment: cleanliness indicators Sa2.5, Sa3 (ISO8501-1), roughness index Ra0.5-150um (ISO8503-1); 3, sandblasting method is divided into pressure feeding ty...
... life, can reach tens of thousands of hours of life, and ordinary high pressure sodium lamp life only a few thousand hours. The color rendering index is higher, the high pressure sodium lamp is...
... protection, long service life, fast response speed and high color rendering index, which is of great significance to urban energy saving lighting. LED is small in size, light in weight and encapsulated in e...