New patented product: hand operated alarm Grassroots inventor Wang Liangren: take the road of innovation and expand development space We have two patents. One is a utility model patent, and the other is a structure and appearance patent. There is a USB charging port. There are 5V, 12V, 16V, 18V, 24V and 36V. The electricity can be adjusted. Wang Liangren said that the original research and development of the alarm came from a message. In the event of a sudden natural disaster, the trapped people were unable to send their rescue information in time due to power failure, which affected the rescue. How to avoid similar tragedies, it is with such a problem, after two years of painstaking research, we have this kind of alarm. Similarly, the upcoming production of this protective mask on Wang Liangren's desk is inspired by a news picture. Wang Liangren, general manager of Taizhou laienke alarm Co., Ltd.: Academician Li Lanjuan had a photo, which was indented by a mask. Later, I wanted to find out how to make a mask for medical staff and epidemic prevention people. How to develop a high protective and comfortable protective mask? From that moment on, Wang Liangren repeatedly communicated with the design team, found professional institutions to test, continuously improved, and finally successfully turned the idea into a reality. Starting from life, it has always been Wang Liangren's habit to find problems and invent products. Colleague Jiang Shiping: he attaches great importance to product development, and even often tosses and studies alone. He is a dedicated and pioneering person. From sirens to protective masks, Wang Liangren's enterprises also produce emergency rescue materials such as life-saving air cushions and escape slides. Each product is constantly updated with the development of technology, and the enterprise has applied for more than 90 patents. Wang Liangren said that the Sixth Plenary Session of the 19th CPC Central Committee proposed to promote self-reliance and self-improvement in science and technology .