Nanjing Guanshi Technology Co., Ltd. (Chinese referred to as Guanstone Technology and English as Keystone), was established in 2002 with a registered capital of RMB 54 million. It has production bases in Xianyang, Shaanxi, Chengdu, Sichuan, and wholly-owned subsidiaries in Los Angeles. The industry spans many fields such as electronics, industry, and automobiles, and employs nearly 500 people.
Since its establishment in 2002, Nanjing Guanshi Technology Co., Ltd. has been committed to the production and research and development of functional devices and polarizers in the semiconductor display industry, and has established good and stable partnerships with many panel manufacturers at home and abroad. Since 2009, Guanshi Technology has successively passed the ISO9001 international quality system certification, ISO14001 international environmental management system certification, and ISOTS16949 certification. It has 30 utility model patents in the production of LCD panels, OLED functional devices, and polarizers, and has obtained " National High-tech Enterprise "honorary title.
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Nanjing Guanshi was officially established
Relocated to Nanjing Xingang Development Zone
Acquired ISO9001 Quality Management System Certification
Acquired ISO14001 Environmental Management System Certification
Obtained high-tech enterprise certificate
Xianyang Crown Stone was formally established
Chengdu Guanshi was officially established
Nanjing Guanshi was transformed into a company limited by shares
Passed TS16949 quality management system certification
Nanjing Guanshi was officially established
Relocated to Nanjing Xingang Development Zone
Acquired ISO9001 Quality Management System Certification
Acquired ISO14001 Environmental Management System Certification
Obtained high-tech enterprise certificate
Xianyang Crown Stone was formally established
Chengdu Guanshi was officially established
Nanjing Guanshi was transformed into a company limited by shares
Passed TS16949 quality management system certification