There are many types of mobile phone cases. In order to protect your favorite mobile phone and prevent the screen from being broken, the mobile phone screen protector is usually used. The mobile phone screen protector is a film that protects the mobile phone screen. It can be made of transparent soft silicone, tempered glass and other materials. The silicone screen protector is made of imported thermoplastic silicone material, which is non-toxic and tasteless. It can prevent scratches, falling, shock and drop, and has a strong resistance to high and low temperature, acid and alkali, dust and dirt. The glass screen protector is made of tempered glass and is made by pressing the raw glass into a certain shape, and the thickness of the glass screen protector is generally thicker than that of the plastic screen protector. Therefore, the hardness and anti-fall ability of the glass screen protector is stronger than that of the plastic screen protector, and the glass screen protector is scratch-resistant. The hard case of the mobile phone case is usually made of PC plastic material. There are many colors of mobile phone hard cases. There are generally transparent and semi-transparent. PC hard plastic cases have been used for a long time. It is a type of plastic that is widely used in industrial and civilian applications. In the early 20th century, it was first used in the aircraft industry, and was later promoted to other fields. As one of the largest engineering plastics, its strength, hardness and dimensional stability are very high. The surface hardness and gloss are relatively high, and it has good heat resistance and heat insulation. How to maintain oppo f17 pro back cover? The maintenance of the screen protector is also a very important part. There are many kinds of screen protectors on the market, and there are also many ways of maintenance. There are two types of screen protectors: hard plastic and soft plastic. The hard plastic screen protector is easy to take care of. It is usually cleaned with a damp cloth. The hard plastic screen protector cannot be put on directly. It must be cleaned first, and the fingerprints and dust on the screen must be removed. There are many ways to put on the screen protector, you can choose the appropriate one. Some people prefer to use the water drop method, and some people prefer to use the vacuum suction method. The method of putting on the screen protector must be carried out according to the instructions. There are many advantages of oppo f17 pro back cover, but in addition to the protection it brings to the mobile phone, some mobile phone cases will also bring disadvantages to the mobile phone. There are many kinds of mobile phone cases on the market, and different materials have different effects on the mobile phone. Generally, the hard case is made of hard plastic material, which is easy to clean, but it will also block the mobile phone signal; the soft case is made of soft materials such as silicone, which will not affect the mobile phone signal, but it is difficult to clean and easy to be contaminated by dirt. Why buy oppo f17 pro back cover on AliExpress First, the transaction process is simpler and more convenient. Order generation, shipping, collection, and payment for both buyers and sellers are done online. Complicated foreign trade operations are not required, saving everyone's time. Second, the AliExpress order pool is relatively small and is mainly retail. And the AliExpress order amount is relatively small, the tariff spend will be less, and the price will be more favorable. Third, China has a large population and is the home country of products sold in many countries. There are more product choices, and the price is also favorable. Fourth, on AliExpress, the quality of service is good. You are sure to find the perfect ring for you. If you have any questions, you can leave a message on the platform, and human customer service will serve you 24 hours a day. At the same time, don't forget to get the coupons on the detail page, more exquisite products are waiting for you to buy on AliExpress. See more details about oppo f17 pro back cover in AliExpress Video Page.