Technological progress can provide China with a huge potential for energy-saving markets. The plastic bottles that are currently used in large quantities in China will also bring considerable energy-saving benefits through technological innovation. China's annual consumption of plastic bottles is about 20 million tons. A recent research project of the Chinese Academy of Sciences has deep-cleaned, purified and sliced ​​recycled plastic bottles and reused them through recycling technology. If we recycle our country's waste plastics every year, we can reduce emissions. Tens of tons of carbon dioxide, 300,000 tons of oil, 50,000 tons of standard coal and 65 million liters of gasoline.
The 20-sided dice has shape of icosahedron. The faces pf D20 sides are equilateral triangles. Icosahedrons have been found dating to Roman/Ptolemaic times, but it is not known if they were used as gaming dice. Modern dice with 20 sides are sometimes numbered 0–9 twice as an alternative to 10-sided dice. The sum of the numbers on opposite faces is 21 if numbered 1–20.
20 Sides Customized Dice,20 Sides Translucent Dice,20 Sided Metal Dice,20 Sided Game Dice
BESCON INDUSTRIAL CO., LIMITED , http://www.besconcn.com