Because pure tungsten is expensive and difficult to manufacture and machine, alternative materials were sought which would maintain some of the useful characteristics of tungsten, such as density and X-ray shielding capabilities, but which would be easier to machine and less expensive. The result of this quest are the Heavy Tungsten Alloys. Tungsten heavy alloys are ideal for high-density applications or for use in radiation shielding.
http://www.td-tungstenshieldin....g.com/tungsten-alloy

When a baby is born, all the body parts are aligned, so there is no need to use a pillow. However, when the child approaches the third month, he or she gains enough strength to raise the head. At this age, the spine also starts bending forwards in preparation for the sitting milestone. Using a pillow at this age helps to maintain the bend psychologically. This ensures the baby remains comfortable without straining to sit up as the body demands. A baby pillow should have a height of at least 3cm and adjusted gradually as the baby develops.
http://www.siliconepillows.com..../pillow/baby-silicon

Automation of operations has given a new direction to industrialization. Many small and huge mechanical tasks are being done by automatic electrically run machines. The Rubber conveyor belt helps to enhance the productivity of various industries by reducing the requirement of manual labor. Moreover, the working conditions and facilities in firms dealing in metals, chemicals, textile, and mining have also been improved.
http://www.sdlandbridge.com/rubber-conveyor-belt/

While we may be accustomed to seeing every bit of our food wrapped in air-tight plastic wrap, food and coffee shouldn’t be limited to only plastic. Since they were developed in 1852, paper bags continue to be a popular bagging item, despite the competition from plastic bags. While you may not be able to find them in as many stores as you once could, paper bags continue to be a popular choice for shopping and food items due to the increased durability and their eco-friendly disposition.
http://www.nanwangpack.com/paper-bag/

Metal conveyor belts easily meet sanitation requirements: A recall is an enormous headache for those in the food manufacturing industry. Not only can it be extremely expensive, it can also do irreparable damage to a manufacturer's reputation. Metal belts are capable of withstanding the extremely high temperatures and pressure required for sanitation. An additional benefit to metal belts is that they are nonporous.
http://www.metallicconveyorbel....ts.com/metal-convery