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In 1995
Senior Engineer Lian Jiasong resigned from his pubic job and established Zhe jiang Ultrafine Powder & Chemical Co., Ltd (LianLian Chemical predecessor )

In 1999
Successfully registered "UP&C" brand in China

In 2006 
Lianyungang Lian Lian Chemical Co., Ltd. was established.

In 2006
The nitroso-free, safety and environmentally friendly rubber accelerator TBzTD and ZBEC were first developed and put into production in China 

In 2007
Lianlian Chemical was elected as the vice chairman company in the China Rubber Industry Association Auxiliary Professional Committee

In 2008
Lianlian Chemical was awarded as a national high-tech enterprise by Ministry of Science and Technology

In 2011
Lianlian Chemical participated in the drafting of China's rubber accelerator industry standards, implementation of vulcanization accelerator TBzTD industry standards

In 2012
Lianlian Chemical participated in the drafting of China's rubber auxiliaries industry standards, the implementation of vulcanization accelerators TETD, ZDMC, DTDM industry standards

In 2012
Successfully registered two trademarks “UP&C” and “LIANLIAN” in the United States and the European Union 

In 2012
Completed the Zhejiang Province fifteenth major scientific and technological project “Study on the production technology of high-purity nano-alumina for energy-saving lamps prepared by sol-gel method”

In 2013
Completed the 11th Five-year plan of national major science and technology support project of the Ministry of Science and Technology” Rubber accelerator cleaning process-10,000 tons of high polymer carrier pre-dispersed rubber accelerator demonstration production line” meeting acceptance.

In 2014
Jiangsu lianlian chemical co., LTD. is officially listed in the national small and medium enterprise share transfer system (new third edition).

In 2016
Our company was recognized by Jiangsu Science and Technology Department as a provincial R&D institution and a postgraduate workstation enterprise in Jiangsu Province.

In 2017
Lianlian rubber accelerator were awarded famous brand products in Jiangsu Province.

In 2018
Lianlian Chemical holding Zhejiang Aitek material Co., Ltd was registered in the National High-tech Zone, Ningbo, special making high purity nano-alumina.

In 2019
Jiangsu Lianlian Chemical Co., and Henan Liyuan Gas group cooperated o establish Henan Lianlian Liyuan New Material Co., Ltd, within annual output of 130,000 tons of environmental friendly rubber accelerator.