The 2450 have substance use shellac as insulation in machine, electronics, but due to the shellac substances are expensive, and the cost of production high electronic machine as well. Because of the need to import shellac substances obtained from the biological fluid of แมลงครั่ง. From Southeast Asia. Therefore, chemists Leo name Hendrik Baekeland think if he can produce a substance other choice with features like substance. Shellac he won great profits from the substance, he discovered, but the experiment of Baekeland back material can be printed, forming, and can withstand high heat without bending. Called "Bakelite." Baekeland think Bakelite invented this will be used to record in stereo, but later soon there. The Bakelite substances to produce a product more. The plastic used today, from Bakelite substances.
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