There are many practical applications for the use of solar panels or photovoltaics. A solar array consists of one or many such panels. MC4 connectors are common on photovoltaic panels. New front door panels and new seats were also included. Historically, solar cells on satellites consisted of several small terrestrial panels folded together. The custom exterior paint was silver with maroon panels and orange pinstriping. It is partners with Panasonic in research, development and production of batteries and solar panels. Reflections made by factory skylights were created by placing lights under angled wooden panels. Dowel joints are popular in chairs, cabinets, panels and tabletops. Aluminium was used for some body panels. It was constructed of steel tubing with woodwork panels. The administration enacted 30% tariffs on imported solar panels. There are numerous thermoset composites, including paper composite panels. XO-1 laptop which was tested and successfully operated by use of solar panels. Engineers examined the other 744 glass panels on the building.