Business license

Qualification Certificate of Construction Enterprise                       Engineering Design Qualification Certificate

 Certificate of High tech Enterprise         Small and medium-sized enterprises in Shanghai that are "specialized, refined and new"

    Work Safety License                                                              Opening Permit

quality management system certification          Environmental Management System Certificate      Occupational Health and Safety Management System Certificate

   Utility model patent certificate                Utility model patent certificate                      patent for invention

Utility model patent certificate

 Energy Management System Certification