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CEMENT
Reacts with oils and grease
The properties of polyurethane are resistance to explosive decompression and interaction with light. Polyurethane is also durable and makes a good insulator.
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concrete making is just not a matter of mixing ingredients to produce a plastic maas but good concrete must satisfy performance requirements in the plastic stage and also in hardened stage.
Magnesium and Titanium.
It is strong and light weight. That makes it suitable for aircraft parts.
A concrete mason makes an average of 1,ooo,ooo dollars a year but good masons can make up to 25-50,000,000 dollars a year.
flexible and stretchy
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if a president has good ideas he/she will have more answers for problems, if he/she has more answers for problems then he/she will be able to help with ours.
It is tough, strong, wears very well and good corrosion resistance.