The name of this model is LP71C706. The marking message is a date of manufacture that consists 1 line of 7 dots and printed on the paper sack. They manufature a cement so the factory is very noisy and at all dusty. Besides, that area is very cold in winter. So special system, hot-wire and thermal ink container was installed to preserve contrller and ink container from dust and cold.
The name of this model is LP71C706. The marking message is a date of manufacture that consists 1 line of 7 dots and printed on the paper sack. They manufature a cement so the factory is very noisy and at all dusty. Besides, that area is very cold in winter. So special system, hot-wire and thermal ink container was installed to preserve contrller and ink container from dust and cold.
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