What's on the instruction manual of Dexin telephone?

The following picture shows the instruction manual of Dexin telephone.

Dexin Technology Group was established in 1987, and passed the ISO900 1-2000 quality management system certification in 2002. In Chinese mainland, we have successively invested in the establishment of Putian Dexin Electronics Co., Ltd., Henan Dexin Electronics Co., Ltd., Dexin Weichuang Technology (Shenzhen) Co., Ltd. and many other branches ... Since its establishment, the company has been adhering to the corporate purpose of "Lide, Lixin" and "unremitting efforts and daily transcendence". At present, the mainland production headquarters covers an area of nearly 300 mu, with a workshop area of about 200,000 square meters, nearly 10,000 employees and nearly 800 engineers and technicians.

Specializing in the design, manufacture and sales of calculators, electronic clocks, sports watches, telephones, walkie-talkies, electronic dictionaries, students' computers and audio-visual equipment. There are ITO, LCD, FPC, mold manufacturing, injection molding, color printing, finished product assembly and other branches. It owns well-known brands such as kadio & reg, Dexin & ampreg and ISA & ampreg, such as EDLT and Apple Tree. For a long time, products have been sold all over the country, and garden-style factories have been sold to Europe, America, Southeast Asia and all over the world.

The company has established a computer management local area network, and related companies have established a computer management wide area network. At the same time, the company's unique corporate culture runs through the whole production process, from product design, materials to production and processing, product molding, and strict quality control measures are taken in each process. The company has formed a modern enterprise management mode of "post responsibility, business assessment, work objectives and reward and punishment system", and successfully passed the ISO900 1 and 2000 international quality management system certification in 2002.