The main products were long-distance tandem boards and 12-channel carriers in 50’s and 60’s.

The product in 70’s was the long-distance transistor manual exchange equipment.

In 80’s, cab signals and train speed monitoring & controlling system were developed. LJKJ-1A Train Monitoring Recorder was the first to pass the technical achievement appraisal of the Ministry of Railways in April 1992 and was popularized in the administrative region of Harbin Railway Bureau.

In the beginning of 90’s, we began to develop 94 Multiple Frequency Shift Automatic Block System for Jing-Jiu Railway. The system passed the technical achievement appraisal of the Ministry of Railways in 1994 and was popularized in the whole country.

JWJ-C Axle Counter passed the technical achievement appraisal of the Ministry of Railways in 1994.

Demonstration of the plan for ZPW-2000R automatic block system with jointless frequency shift tract circuit was accomplished at the end of 2001. The sample machine for the project was developed at the beginning of 2002 and passed overall tests with the technical conditions determined when the project was first established.

Heilongjiang Railway Signal Technology passed ISO9001: 2000 Quality Management System Certification Check on Aug. 23, 2002 and was awarded ISO9001: 2000 Quality System Certificate.

Heilongjiang Railway Signal Technology was graded by Heilongjiang Science and Technology Department as high and new technical enterprise in December 2002.

Heilongjiang Railway Signal Technology was approved by the National Post-Doctorial Administration Commission of the State Ministry of Personnel on Dec. 26, 2003 to set up the enterprise post-doctorial research center.

From November 2002 to 2006, ZPW-2000R Automatic Block System and JWJ-C Axle Counting System were widely put into use in the whole country. Their operation was safe and stable with reliable performances.

JWJ-C2 Axle Counter which was an improved model on basis of Type JWJ-C Axle Counting system passed the technical test of the Ministry of Railways in 2006.

ZPW-2000R automatic block system with jointless frequency shift track circuit and Inner-Station Coding Equipment won administrative license from the Ministry of Railways on Apr. 16, 2007.