In the Earth's crust. titanium is found mainly in igneous rock. where it is the ninth most abundant element. In Australia. Canada. South Africa. India. and Norway. titanium is primarily found in the form of ilmenite. rutile. and leucoxene. The Kroll or Hunt method is used to extract pure titanium from a commercially available ore. It is also found in plants. animals and bodies of water.

Low-density polypropylene (LDPP) offers several advantages making it a preferred choice for various applications. Firstly, its lower density means it is lighter, thus reducing transportation costs and easing handling. It exhibits excellent chemical resistance, protecting against many acids, alkalis, and solvents, thereby extending the life of products or containers made from it. LDPP also has good electrical properties, making it suitable for electrical components and insulations. Additionally, it's flexible and has a high impact resistance, which is beneficial for packaging that needs to withstand stress or deformation without breaking. Due to its lower melting point compared to high-density polypropylene, LDPP can be easily molded into various shapes, facilitating a wide range of applications. It is also more transparent and can be used in applications where visibility of the content is necessary. Overall, LDPP combines durability, flexibility, and cost-effectiveness, making it a versatile material in industries ranging from packaging to automotive.

Polypropylene and polyester are both popular synthetic fibers used in a wide variety of applications, from clothing and upholstery to industrial products. When it comes to stretching capabilities, polypropylene generally exhibits less stretch than polyester. This is due to the inherent properties of the polymer structures; polyester has a more flexible molecular structure, which allows it more elasticity. Additionally, polyester fibers can be engineered with a specific orientation or drawn out to enhance their elasticity, whereas polypropylene's structure is more rigid, leading to less elongation under load. However, for specific applications where minimal stretch is desirable, polypropylene's lower stretch characteristic might be advantageous. Both materials offer unique benefits such as durability, resistance to chemicals, and moisture, but in terms of stretchability, polyester generally outperforms polypropylene.