Polycarbonate polyester is a polymer compound that, due to its structural specificity, has become the fastest growing general engineering plastic among the top five engineering plastics.

The stamping process is one of the most important technologies in modern industry. Stamping is a production technique in which a sheet is directly subjected to deformation forces and deformed in a die with the help of power from conventional or specialised stamping equipment to obtain a product part of a certain shape, size and performance.

Membrane switches, also known as light-touch keypads, use a flat multi-layer combination to form an integral sealed structure, which is a type of contact switch made by printing a contact circuit on a flexible polycarbonate or mylar film with a conductive paste.

As people's consumption levels increase, so do their demands for quality of life. At the same time, the development of industry has facilitated the creation of new products, of which lenses are a typical example, and they are now being used more and more.

Lenses are one of the most common items in everyday life and they can be found almost everywhere. With the development of the times, the lens industry occupies a very important position in the global market and the number of manufacturers concerning lenses is increasing.