Category: 201902
Donghua University developed a new biological material PHBV plastic bag
May Day Mountaineering Association Akan Mountain Guide Examination Photo Exhibition (3)
May Day Mountaineering Association Akan Mountain Guideline Photo Exhibition (16)
Brief description of four biodegradable plastic packaging technologies
Zhuhai Special Police rescue 26 trapped mountain climbers [Photo]
Shen Peng successfully developed a single-sided double-sealed packaging film