The battery diaphragm is mainly to separate the positive and negative plates of the battery in a narrow space to prevent the short circuit caused by the contact between the two poles, but it can ensure the free passage of ions in the electrolyte between the positive and negative poles.

In the era of 1G and 2G before the popularity of smart phones, mobile phones were less troubled by heat dissipation technology. But with the coming of the 3G intelligent machine, the hardware configuration of mobile phones is getting higher and higher. CPU has been upgrading to multi-core and high performance. The communication rate has been rising

DASEN held outward bound activities each year to enrich the spiritual and cultural life of all employees,strengthen the communication between employees, promote team spirit and enhance cohesion.

In order to enhance employees' awareness of safe use for electricity, popularize knowledge of safe use for electricity and eliminate hidden dangers of safe use for electricity, on the afternoon of Oc. 19th, the Personnel Administration Department organized the company's electrician Mr. Liu Weijie to conduct a special training on ;Knowledge

In order to further strengthen enterprise fire safety management, prevent fire and reduce fire hazards, strengthen staff's awareness of fire safety, and improve staff's ability of fire safety prevention, self-rescue, escape and life-saving, on the morning of May 22, the company organized a fire emergency evacuation drill for the whole factory.