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The raw material of lenses is plastic polymer in most cases. There are some lenses which are made from glass materials as well.
Petroleum.
yes
It is made from raw material because it is made from cotton
Plastic raw material.
Yes, it the raw material for a lot of products like plastic.
A clipboard typically consists of a few primary raw materials. The base or backing of the clipboard is usually made of a durable material such as hardboard, plastic, or metal. The clip mechanism is commonly made of metal, such as steel or aluminum, for strength and durability. The surface of the clipboard may be covered with a layer of paper, plastic, or other materials for writing or drawing.
In a plastic factory, raw plastic material is processed and shaped through heating, molding, extrusion, or injection molding techniques. Additives such as colorants, stabilizers, and fillers may be mixed in to enhance the material's properties. Finally, the plastic is cooled and trimmed into the desired shape or form.
There are many types of plastics and many raw materials possible. The vast majority come from petroleum/crude oil ultimately. Many are made from crude oil and NGLs -natural Gas Liquids and other hydrocarbons. Other materials such as chlorine to make PVC, are obtained from electrolysis of seawater. Cellulosic polymers are made wood and plant materials. Quite a few rubbers are tapped from the rubber tree.
it is where the raw material is made.
Yes, most plastics are made from petroleum, which is a fossil fuel. Petroleum serves as the raw material for producing various types of plastics through processes like polymerization. However, efforts are being made to develop alternative sources for plastic production to reduce reliance on petroleum.
it is where the raw material is made.