Цены ВОЙТИ РЕГИСТРАЦИЯ

Категории: Все - materials - elements - rubber - manufacturing

по mack1520 mack1520 2 лет назад

136

Mechanical pencil

Various raw materials and elements play a crucial role in the manufacturing and production sectors. Items such as graphite, both natural and processed, are essential for products like pencils.

Mechanical pencil

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Plastic water bottles are cheap and convenient products, but their production and waste have detrimental environmental costs.

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Mechanical pencil

Electricity

Clay

Water

Alum

Flour

Graphite

Chemicals

Natural Graphite

Metal

Iron

Carbon

Rubber

Rubber Tree

Latex

plastic

Crude oil

Salt

Cellulose

Natural gas

Coal