The 2450 have substance use shellac as insulation in machine, electronics, but due to the shellac substances are expensive, and the cost of production facilities, high-tech electronics Because of the need to import shellac from Southeast Asia, so Leo Baekeland decided to produce another substance with properties similar to shellac but the experiment of optical Baekeland back material can be printed, forming, and can withstand high heat without bending, called "Bakelite Baekeland think." Bakelite who invented this will be used to record in stereo, but later the Bakelite substances to produce a product more. The use of plastics in current from Bakelite substances.
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