Linge air compressor originated from Germany and was built in Guangzhou on 200 1. It is one of the earliest enterprises in China to obtain the license of screw air compressor, and the whole machine has high cost performance. It is also the first manufacturer in China to sign a contract: the whole machine is guaranteed for two years and the main machine is guaranteed for five years. The oil and gas pipelines of the whole machine are all made of stainless steel, and it will never leak oil everywhere like other screw air compressors in two years. The noise of Lin Erfeng's direct connection unit and frequency conversion unit is extremely low, and there is no best, only better. Generally speaking, Lin Erfeng compressor is very stable.

The Qinghai-Tibet Plateau is known as the "roof of the world", where not only the natural environment is very bad: sandstorms are frequent; Rapidly changing temperature, the limit reaches MINUS 45 degrees; Terrible frozen soil stretches for thousands of miles; Moreover, the air is thin, the oxygen supply is insufficient, many places are not suitable for human habitation, and animals are scarce.

In 2006, Linggefeng defeated dozens of screw air compressor manufacturers around the world and won the bid for all compressor projects on the Qinghai-Tibet Railway, successfully solving the problem of plateau hypoxia, one of the three major problems on the Qinghai-Tibet Plateau. Since July 1 2006, "Lin Erfeng" air compressor has continuously delivered comfortable air to passengers on the train, and has been rated as the most cost-effective screw air compressor in the world by thousands of customers in China. The structure of the direct connection unit is very similar to that of the American prime mover. Linggefeng air compressor is a mid-range air compressor from the industry point of view, but the price is very moderate.