梦想与现实：请帮忙翻译下胶袋信息，谢谢！
- The quality of the plastic must be POLYETHYLENE with good optical, mechanical and sealling conditions. The plastic must always be clear:
CHARACTERISTICS UNIT VALUE
THICKNESS Gauge/Micron (μm) 60/15 μm (min.) and 90/22,5 μm (max.)
DENSITY gr/cm3 0,315
Alfer远航：行业术语，还是行内人翻译才准确
