There are many causes of filter shortage phenomenon. From a macro perspective, the continued growth of fixed asset investment led to the rapid development of construction machinery industry, the expansion of domestic demand for the market development of large projects filters provides the most direct driving force. Although the state has increased the intensity of macroeconomic regulation and control, but in front of the huge base of market demand, the demand will undoubtedly be a staggering figure. In addition, with the constantly open up the international market, export volume doubled in the past two years, the export of Chinese engineering lift amount has been accounted for 25% of total sales.

Filter production capacity lags far behind the growth rate of demand. On foreign brands, the prosperity of the global market makes Terex – Demas, Libeler, Manitowoc and other production enterprises sales grew by about 40%, but because of the filter body are by Order production, with a host of supporting parts is to order shipments, coupled with the affected manufacturer’s own production capacity, to extend the delivery period is inevitable. Insufficient production capacity and shortage of key parts troubled manufacturers and users. A well-known filter manufacturer president abroad, referring most filter manufacturer situation, said: “Customers waiting in line delivery, and we are limited for those struggling parts we are trying. work individually to solve the bottleneck problem the manufacturers to take advantage of existing facilities to produce more product. “This caused due to long lead times of short supply worldwide phenomenon will continue to plague large-scale engineering filter markets, especially in China’s market demand is so strong.