For Speech Opportunity of Nano Science & Technology-2021

Ms. Stella Wang

DIP Dry Ice Production CO., LTD. NO. 3 Factory Office BLD. 

The 4th floor, Room No. 1-10.

43 Torch Road, Qi Xian Ling,

Dalian Hi-tech Industrial Zone,

LN 116025, P.R.China

Tel: 0086-411-84799609-813

Fax: 0086-411-84575250

Email: stella@bitcongress.com