Filter industry technology is already very mature, in recent years, in new product development, improve the level of product technology, quality, reliability, the respect such as mechanical and electrical integration of research, and has made some progress, but still can't satisfy the petroleum chemical industry, chemical industry, electric power, light industry, textile, metallurgy, coal, and other fields the need for large equipment.

Brazil imported 199,400 cars in 2011, up 87.4% from 106,400 in 2010, according to the Brazilian association of automobile importers. But it also predicts that sales of imported cars will at least continue to decline. And as the most important link of the automobile launch festival, the filter element will show different trends due to the changes in the range of automobile sales.

Traditional filtering methods (including the filter cloth as filter medium plate and frame filter press, centrifuge and filter, filter paper as filter material of vacuum pressurized filter) filtering accuracy is about 10 microns, the more there is leaking charcoal ills, even for loop filter is difficult to ensure no leaking charcoal, so often rework filter, lead to unstable product quality, the yield is not high, the cost increases, caused a large number of energy waste, and leads to the deterioration of the environment pollution and the production environment. In recent years, the filter material technology in activated carbon filter has been improved, but there are still many technical defects.

The structure of all precision filters is basically vertically mounted vertical tubular filter, the biggest fatal injury of this filter is the incomplete filtering of remaining materials inside the machine. Before unloading filter cake, the remaining materials inside the body must be pressed back into the original material storage tank, mixed with the next batch of unfiltered materials, and then carried out the next round of filtering. This will make the upper and lower batches of materials produced "mixed batch", and pharmaceutical, food and other products with strict quality requirements of fine chemical production is not allowed to "mixed batch". Because if the product quality is not qualified in a certain period of time, it is bound to have two batches of large quantities of products to rework, the loss is very large.

Brazil's import volume increased, while South Korea's kia topped the list of major imported cars in Brazil, while China's jianghuai and chery ranked second and third with sales of 23,700 and 21,700 respectively. This has also boosted sales of car parts.

According to the investigation of Shanghai jinshan, liaohua and Beijing yanshan petrochemical enterprises in the 1970s, 29 sets of 138 centrifuges are needed in 11 chemical plants. In the past two years, a survey has been conducted on 43 petroleum and petrochemical enterprises affiliated to CNPC and sinopec: there are more than 200 sets of relatively large horizontal spiral discharging centrifuges with a diameter of more than 600 mm.

"Manufacturing formulation and process of steel double-layer microporous tubes with filtration accuracy up to 0.5 micron and 0.3 micron" and "make the tubular microporous filter have no leftover material backflow and filter all the materials inside the machine, avoiding the" mixed batch "filter structure. Yinbeier in China is making efforts to achieve higher accuracy.