In 2005, Chongqing Licheng Construction Engineering Equipment Rental co., Ltd was established.
In 2009, the first "Licheng" construction elevator was off the assembly line.
In 2010, Chongqing Jinjiazi Electromechanical Equipment Co., Ltd. was established, and the JJ-ⅠandⅡ lifting scaffolds passed the acceptance.
In 2011, New service outlets were established in Chengdu, Yunnan, Guiyang and Lanzhou.
In 2012, The first "Licheng" brand construction elevator exported to Brazil.
In 2013, YFS was awarded as a key industrial enterprise in Yubei District of Chongqing and the first famous brand enterprise of Chongqing SMES.
In 2014, Construction elevators were exported to South America, Southeast Asia, Europe and the Middle East.
In 2015, The second-generation "Licheng" construction elevator was launched.
In 2019, JJ-03A all-steel attached lifting scaffolding passed the acceptance.