- Methods The antifogging agent was a mixture of the basic liquid containing oxometallate and additive containing surfactant.
- The tribological properties of anti-wear additive containing nano-diamond powder in lubricating oil were studied using a four-ball tester.
- The coal additive contains surface activating catalyst, co-solvent, permeation assistant and solvent.
- And cheap the profile that window of model steel door uses, calcium carbonate content exceeds 50% , additive contains plumbic salt, stability is poor, and influence human body is healthy.
- Cotton is more comfortable to wear than nylon.