1965

The first optical instrument was manufactured by YHO in China.

1967

The first grating encoder was manufactured by YHO in China.

1986

YHO introduced Japanese encoder technology and formed its own intellectual

property.

1992

YHO participated in the launch of Chinese carrier rockets and communication

satellites and was commended by the Central Committee of the Communist

Party of China, the State Council and the Central Military Commission.

1994

YHO became the first in the encoder industry to obtain the import and export right

license of the Ministry of Foreign Trade.

2002

The National Postdoctoral Research Station was established.

2004

It was the first in the industry to fully implement the ERP( enterprise resource

planning system )and successfully implemented information management.

2005

The subsidiary " Startroincs Automation CO.,Ltd. " was established.

2006

 It was established as a postdoctoral research and entrepreneurship base in Jilin

Province, and its R & D strength was further strengthened.

2007

The subsidiary "Changchun Yuheng Shidai Optics & Electronics Scientific and Techn-ological Co., Ltd." was established.

2008

 A new industrial science and technology park covering an area of 30,000 square

meters was completed; it was identified as the first batch of national high-tech

enterprises in Jilin Province.

2009

The project of "Industrialization of High-precision Synchronous Control

Photoelectric Encoder" won the special project of National Information Industry

Promotion and Technical Transformation ; Presided "Chinese Rotary Encoder

Industry Standard".

2010

 YHO undertook the national public welfare industry research project "photoelectric encoder technical standard research"; presided over the revision of the "grating

angle encoder industry standard ", and "CPE-Bus displacement encoder communic-ation protocol standard " .

2011

2012

Yuheng brand was recognized as a well-known trademark in China by the State

Administration for Industry and Commerce.

2013

YHO undertook the industrialization task of the National Twelfth Five-Year Scientific and Technological Special Project "Research and Development and Industrializa-

tion of Highly Integrated Single Code Channel Absolute Linear Scales";through the

acquisition of 65% equity in Changchun UP Optotech (Holding) Co., Ltd., becoming Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sci-ence Holding companies.

2016

The project "Development of High-precision, High-resolution Absolute Grating

Rotary Encoder" successfully passed the national technical acceptance, and the

product reached the international advanced level of similar products.

2017

YHO acquired the subsidiary "Changguang Digital Display Technology Co., LTD.";

Established the subsidiary " Changguang Qiheng Sensor Technology Co., Ltd.";

Undertook the national high-tech scientific key special project " Development and

Industrialization of High-resolution Angular Displacement Sensor".

2018

The two national “Twelfth Five-Year” major science and technology projects was successfully completed final acceptance.