Plastic is a good insulator and a bad conductor of electricity, which makes it a good material to protect people from electric shocks when handling appliances. On top of that, plastics are inexpensive and easy to shape.
Plastic is less expensive, just as good as copper in some cases, better in others and poorer in some.
It depends what kind of materials you are looking for. Amazon has great items that involve plastic things like plastic phone cases, plastic containers, or anything else related. They have good suppliers and are very cheap.
Quality of good plastic surgery depends on the plastic surgeon in question. In many cases, a reputable plastic surgeon, in addition to a natural, non-fake look and comfortable feel will determine if a plastic surgery was successful.
If you are referring to toothbrush cases then yes, most of them are made out of plastic, its not a very durable material but it is very cheap and does a very good job of protecting toothbrushes from dirt.
The rubber (silicon) cases are more durable than the leather because it is very good at absorbing shock .
Depending on the condition if it is in bad shape like cracks in the plastic but runs well between 300-500 or if it is in really good shape like perfect plastics and runs great could be between 1200-1500
The flexible plastic cases are the best mainly because the rubber is a better absorber of shock then the hard plastic cases. The plastic covers are only good to make your phone look different they in fact supply very little protection.
It looks good enough, it's easy to shape and it's fairly inexpensive.
Tip top shape means in good perfect working condition,use and maintenance of any goods ,articles or machines.
If you are looking for information online then you are in good shape. Take a look at "www.SinoMould.com" , they brag about thier wonderful service in the plastic mold industry.
its good becaus it looks cool and its the future man! forget about thos plastic pencil cases