On February 28, 1997, Luzhou Metallurgical & Mineral Equipment Co., Ltd. was established, which researched and manufactured the first CJZJ filter press with independent intellectual property rights.

In July 2006，the trade mark Changjie was registered and the CJXA high efficient filter press was successfully designed, which has set the industrial record of lowest moisture content in the filter cake.

In August 2009, Luzhou Filtering Equipment Co., Ltd. was established and CJZJ-ZB filter press was successfully researched,which created the record of the highest processing capacity per unit.

On May 28, 2014, Chengdu Changjie Technology Co., Ltd. was founded, Changjie have started global market expansion.