1

● In September 2006, the company was established and successfully reformed.

●  In April 2011, the company passed the ISO9001 quality management system certification and ISO14001 environmental management system certification;；

●  In June 2011, cooperated with Taiwan Lubo Co., Ltd. to develop an intelligent control shot blasting pretreatment system for servo motor control;
●European shot blasting machine experts guide cooperative development, leading domestic technology;
●The 15-75Kw direct-connected shaft blasting machine was successfully developed and successfully entered Europe and the United States, and received orders and approvals from ThyssenKrupp.
●The chief engineer of the double star casting machine, the chief engineer of the Yellow River casting machine joined
●Asian high-end shot blasting machine manufacturer pilot company

2

●  In June 2012, the company successfully developed a 90-horsepower high-power direct-connected shot blasting machine, which was praised by ThyssenKrupp, Germany. At the same time, it developed a continuous-pass crawler shot blasting machine, breaking the European monopoly.

●  In August 2012, the site inspection and product quality sampling inspection of the shot blasting machine experts of the shot blasting machine equipment quality supervision and inspection center was passed, and the “Blasting Machine Supplier License” issued by the Heavy Duty Truck Group was obtained.

●  In 2012, the company obtained six utility model patents and one appearance patent. In August 2013, it obtained an invention patent and a utility model patent. In 2014, it obtained 14 utility model patents.

3

●  In March 2013, the company obtained the energy-saving certification of the product. The energy efficiency index of the shot blasting machine produced by the company meets the requirements of energy-saving value in GB 19152-2009 “Energy efficiency limit value and energy efficiency rating of wire-passing shot blasting machine”.

●  Opened the shot blasting machine market in 2013 and participated in industry conferences. On October 27, 2013, it participated in the International Foundry Exhibition for the first time.

●  In July 2013, the new plant started construction and covers an area of 27,000 square meters.

4

●  In 2014, it was selected as the outstanding supplier of Siemens in Greater China (sixth batch)

●  Received the first prize of Science and Technology Innovation of the National Science and Technology Bureau in 2014

●  In 2014, KNNJOO opened an office in Taiwan.

●  On June 6, 2014, the Office of Industry and Information Technology elected to participate in the "8th SME Technology Exhibition"

●  On October 9, 2014, the Office of Industry and Information Technology elected to participate in the "11th China International Small and Medium Enterprises Fair"

●  On October 15, 2014, the company's European agents received an order for 9 million shot blasting machine projects!

5

●  On January 1, 2015, the shot blasting machine was exported to France and Spain.
●  On November 12, 2015, the holding subsidiary's shot blasting machine and Hangzhou Xiaogang Steel Co., Ltd. reached a cooperation agreement and won the bid for 30 million shot blasting pretreatment line project.
 

6

●  On May 1, 2018, the mesh belt shot blasting machine was exported to Germany and the United States.
●  On December 12, 2018, the company obtained national high-tech enterprises, two national patents and 18 utility model patents.