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impact on the sategic function of underground consuction, and economic performance of the play, therefore, must be the lighting performance of underground consuction to do the specific depth. aditional building automation systems generally include computer networks, equipment monitoring, fire alarm, security and other subsystems, intelligent lighting system development is lagging behind. with the advancement of technology and social development, energy-efficient lighting systems and scientific management of the increasingly high demand. in particular, accounting for the underground architectural lighting energy consumption than a major power, lighting is becoming increasingly important.neon open signs (http://www.junxiaoguangchang.com/)
 lighting apparatus in a normal working position. the conversion of three relay throw 2 knives 2 ansferred to the working position, according to the standard 12.4 gb7000.1 thermal test thermal test requirements, through the led lighting conol device within the maix of led lighting in the light, at this time led lighting apparatus in normal working condition, observe the led's heat sink temperature glue reflect the value of the thermocouple, when the temperature reaches thermal equilibrium (temperature change per hour is less than 1 ), they can put three .restaurant sign (http://www.junxiaoguangchang.com/)
overhang of the graphics that are in the negative-type photoresist imaging coincided with the positive type photoresist image conast, so the negative type photoresist lift-off process is the best choice. for example ei200 photoresist is mainly based on phenolic resin (novolak) and light acid as the main chemical increase convergence (chemi cally amplified) negative type photoresist, the phenolic resin can be dissolved in alkaline aqueous solution, compared to rubber quality (ruer type) of the negative type photoresist with environmental advantages. portable signs (http://www.junxiaoguangchang.com/)