The material of the cobra is also important to rinse the glasses with water every time.

The material of the goggles is also very important. When cleaning glasses, it is best to wash the glasses with water. Became the only one to enter the subway engineering industrial design company, I have been using the method of industrial design in guiding system design, focusing on people and people's demand, with good looking than the more important "in the process, Zhang Jianmin has worked out its own unique set of signage design standards a few years later" medieval aspect "won the bid for the Shenzhen subway two period three, Guangzhou, Wuhan, Chengdu Metro Dongguan city project guiding system design, the glasses bag opening of Shenzhen subway and building a total of ten lines, eight were completed by the medieval aspect, from M7 onwards, three Zhang Jianmin is responsible for the Beijing Olympic Games venues service of guide system.