科技的進步使得人們的生活越來越便利。從最初的塑料到現在的鋁合金，材料的變化使得產品的性能得到了顯著提升。讓我們一起來看看塑料外殼升級的變化。

　　The progress of science and technology has made people's lives more and more convenient. From the initial plastic to the current aluminum alloy, the change of materials has significantly improved the performance of products. Let's take a look at the changes of plastic casing upgrading.

　　塑料外殼升級的變化

　　Changes of plastic casing upgrading

　　70年代，第一代塑料外殼電視機誕生。當時的塑料材質輕巧，易于加工，價格低廉，因此得到了很多人的青睞。電視機的性能雖然不是很好，但是隨著科技的進步，塑料外殼的性能也在不斷提高。

　　In the 1970s, the first generation of plastic casing television was born. At that time, plastic material was light and easy to process, and the price was low, so it was favored by many people. Although the performance of television is not very good, with the progress of science and technology, the performance of plastic casing is also constantly improving.

　　80年代，塑料材料由于其良好的成本效益和易加工性，得到了越來越多的應用。電視機也逐漸趨于成熟，而且也更加便宜。然而，由于塑料材料的輕質，易碎，容易變形，所以人們對其性能還是持懷疑態度。

　　In the 1980s, plastic materials were used more and more because of their good cost-effectiveness and easy processing. Televisions are also gradually becoming mature, and they are cheaper. However, because of the light weight, fragility and easy deformation of plastic materials, people are still skeptical about their performance.

　　到了90年代后期，隨著科技的進步，鋁合金材料開始被用于電視機的外殼。鋁合金具有較高的強度和剛度，能夠有效地防止外殼變形。此外，鋁合金性能穩定，耐腐蝕性強，壽命長，所以人們更加喜歡使用鋁合金外殼。

　　After the late 1990s, with the progress of science and technology, aluminum alloy materials began to be used in television casing. Aluminum alloy has high strength and stiffness, which can effectively prevent casing deformation. In addition, aluminum alloy has stable performance, strong corrosion resistance and long service life, so people like to use aluminum alloy casing more.

　　隨著塑料外殼的改進，我們可以看到它的性能越來越好，壽命越來越長。相信隨著科技的進步，塑料外殼的性能會得到進一步提高。

　　With the improvement of plastic casing, we can see that its performance is getting better and better, and its life is getting longer. I believe that with the progress of science and technology, the performance of plastic casing will be further improved.