When the mobile phone is cold and shut down, it is actually the common fault of most mobile phones, which is related to the characteristics of lithium-ion batteries. Lithium battery depends on the mov
2019/12/02 admin
Nowadays, with the increasing popularity of smart phones and the continuous expansion of application scenarios and functions, smart phones have become an indispensable part of people's daily life.
2019/12/02 admin
The following waterproof grades refer to international applicable standards such as IEC 60529, GB 4208, GB / T 10485-2007, DIN 40050-9, ISO 20653, ISO 16750, etc1. Scope: the waterproof test includes
2019/12/02 优尚丰三防手机