1. Residual gas readout instrument appearance design patent certificate, Patent No.: ZL200630096809.5

2. Invention patent certificate of natural pigment with supercritical carbon dioxide one-step dyeing method, Patent No.: ZL 200610134310.8

3. Total hydrocarbon zero gas preparation device granted utility model patents notice, Apply No. (Patent No.: 201020585380.7)

4. Pressure self regulating valve granted utility model patent notice, Apply No. (Patent No.: 201020585394.9)

5. A device for the preparation of selenium urea granted the utility model patent notice, Apply No. (Patent No.: 201120012864.7)