Ma Yunan, director of the Shanghai Municipal Greening and City Management Bureau, recently revealed that the Shanghai Municipal Government has approved the landscape lighting plan for the main streets in the central city, and strengthened the construction of landscape lighting around the Expo site and near the Huangpu River.
The lighting landscape construction plan around the Expo Park, especially between the two bridges of the Huangpu River, will attempt to form a dynamic and static combination by using a variety of lighting methods and technological means through the joint construction of rivers, water, bridges, ships and cross-strait buildings. The order of the primary and secondary, the light and dark, the water, the distant and the near echo. “I believe that by the time of the World Expo, the lighting landscape of the entire park and the lights on both sides of the Huangpu River will unite to create a very good landscape for the citizens.†Ma Yunan said.
He also said that Shanghai will further enhance the level of lighting landscape in key areas of the central city, using scientific and technological means, using a variety of lighting methods, especially the use of energy-saving lamps, to enhance the scientific and technological level and connotation of landscape lighting in key areas of Shanghai. .
MC PCB--Metal Core Printed Circuit Boards
MC PCB means metal core printed circuit boards. why use metal,not FR4/CEM-1 or others? All is to get high thermal conductivity. The most MC PCB is Aluminum PCB, Aluminum has good heat transfer and dissipation ability, but also cheaper than copper based PCB.Many customers asked a quote for MC PCB but without the thermal requirements.If you know the thermal conductivity is the most most important thing for MC PCB,then
you will know why the price is so difference. Normal thermal is from 0.8-2.00 W/m.k,and higher can up to 8.0 W/m.k,even more if you need ,but ,are you sure ? When we quote to you ,we have to ask you the thermal conductivity,it is not only about cost but your product.Many factories used low thermal ,can you use the boards?
MC PCB uses in LED lights,Industrial power equipment,Cars,Power,etc. Bergquist is the top quality metal core material but top cost as well.
Thermal Conductive Board (TCB), or Insulated Metal Substrate (IMS), provides the advantages of high thermal conductivity, reliability and solder heat endurance. The TCB substrate is a sandwich structure, which includes layers of conductor, insulator and metal base.Traditionally, this insulator is made of epoxy, epoxy filled glass fiber, polyimide, or other dielectric materials. However, these kinds of insulators could not meet the requirement in high-power electronic devices. The heat generated by these devices will accumulate, andthe life time and reliability of the end product will decrease.
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