When Apple mobile phones and computers became popular weather vanes, how many "fruit fans" knew that the screws used in the back shell were titanium screws.

In the past, many mobile phones or computers used steel screws. Because steel is magnetic, demagnetization is required during application. If electronic products are used for a long time, steel screws are affected by electromagnetic fields and continue to be magnetized, which will affect network signals. Titanium has the advantages of non-magnetic, light weight, and high strength. Therefore, during the development of the "Apple 5" mobile phone, the researchers decided to use titanium instead. 44 titanium screws were used on the "Apple 6" mobile phone.

In order to meet the quality requirements of mobile phone manufacturing in terms of smoothness, we have purchased high-precision grinders and fine-cutting processing techniques to ensure the increase in the yield of titanium screws. After hard work, the yield of the company has increased from 60% in the past to nearly 99%. . If the error value exceeds 0.3% of a millimeter, it is a waste product. After more than 4 years of dealing with a certain "Apple" raw material supplier in Shenzhen, the titanium screws produced have supported half of the company's income.