• Certificate of honor

  • Beijing independent innovation product certificate

  • Patent for control system of light cleaning machine

  • patent for invention

Patent certificate of optical cleaning system on December 1st, 2003
High intensity self purification light cleaning system  
sci-tech novelty retrieval report 

December 1, 2003
Intelligent UV photoelectric surface treatment device
sci-tech novelty retrieval report 

May 1, 2012
Contact angle test (test report)
Department of electrical engineering and applied electronic technology, Tsinghua University
High pressure laboratory
June 28, 2012