Polytetrafluoroethylene -------- ---- the king of plastics
Teflon is a novel plastic.It was discovered during world war ii, and formal production was only nearly 20 years old.So why is teflon called the "king of plastics"?Because it has many properties that...
Learn the role of printing thickeners
It is not difficult to find in life, a lot of clothes have the figure of printing, its existence to the fashion industry added a lot of color, but also to meet the people for diversification,...