Cast Film. Cast film is created by feeding a sheet of heated resin through a flat die. The molten material emerges from the die and out onto larger chilling rollers which cool and solidify the material. It is then ready for trimming and rolling. Cast film is minimally pre-stretched compared with blown film giving it improved depth of drawing for thermoforming operations. The cooling process can be used to produce different characteristics in the final product. Cast film can be thinned by winding the film out of the roller faster than it is extruded. http://www.xinyemachinery.com/film-blowing-machine/

Human hair extension is a hairstyle technology recently introduced from Europe. As the name suggests, hair extension is to connect the hair to one's real hair, and instantly change from short hair to long hair. The hair used for hair extensions can be wigs or real hair. There are two types of hair extension mechanism wigs and handmade wigs. The materials used are chemical fiber silk and human hair. The fibers are mainly PVC and PET materials. http://www.angelfantastic.com/human-hair-extension/

The disposable face mask is made of more than three layers of non-woven fabrics of 28 grams; the bridge of the nose is made of environmentally friendly all-plastic strips, does not contain any metal, and has a breathable strap, which is comfortable and especially suitable for electronic factories and daily use. Disposable masks (medical surgical masks) can prevent respiratory infections to a certain extent, but cannot prevent haze. http://www.beeda-teyouda.com/disposable-face-mask/

The mold generally includes two parts, a movable mold and a fixed mold (or a punch and a concave mold), which can be divided and closed. The mold is a precision mold with complex shape, which bears the expansion force of the blank, and has high requirements on structural strength, rigidity, surface hardness, surface roughness and machining accuracy. The development level of mold production is one of the important signs of the level of machinery manufacturing. http://www.chinainjectionmould.com/plastic-mould/precision-mold/

Experts say baby walkers aren't safe – and they don't help babies learn to walk faster, either. Baby walkers are circular, wheeled toys with suspended seats. They're designed so your baby's feet can touch the ground while they're seated, so they can propel themself around. Even as new safety features have been implemented over the years, thousands of babies every year end up in emergency rooms and doctor's offices from falling down stairs or bumping into furniture while in a walker. http://www.blmtoy.com/baby-walker/baby-walker-toy/

Every beauty guru knows what it's like to have way too many makeup bags. Whether you keep buying makeup that comes with free gift bags or you simply can't stop buying adorable ones, there comes a point when your excess starts to go to become almost silly, and you have to find other uses for your makeup bags. After all, there are only so many you need to actually hold your products, and you always end up picking a favorite bag and then neglecting the others. http://www.chinajiuxintools.com/make-up-case/

If you have doubts on the differences between fiber pigtails and fiber patch cords this article will help you to know their main differences. The main difference between these two cables is that pigtails have one side terminated with a connector and other side ends with bare fibers, while patch cords have two connectors terminated on both ends. Let’s see in more detail how these assemblies are used and how are they distinguished. http://www.cobtel.com/patch-cord-or-jumper/

A pressure transmitter is a mechanical device that measures the expansive force of a liquid or gaseous sample. Also known as a pressure transducer, this type of sensor is typically composed of a pressure sensitive surface area made of steel, silicon, or other materials depending upon the analyte’s composition. Behind these surfaces are electronic components capable of converting the applied force of the sample upon the pressure sensor into an electrical signal. http://www.enbbonsensor.com/pressure-transmitter/

Once the board has paste applied, the components are placed on top. This can be done by hand or by a machine. Using tweezers is a great way to place components. There is a common fallacy that you need large, expensive machines to make electronics. Not true! A human is quite fast at placing components and the surface tension of liquid metal is such that most components will shift into their correct location during reflow. But humans have a limit to their stamina. http://www.etonautosmtmachine.com/led-pick-and-place-machine/

indoor air into a container that separates oxygen from room air and concentrates it to provide oxygen continuously to users. Oxygen plant is an industrial system designed to generate oxygen. It typically uses air as a feedstock and separate it from other components of air using pressure swing absorption or membrane separation techniques. Such plants are distinct from cryogenic separation plants which separate and capture all the components of air. Oxygen finds broad application in various technological processes and in almost all industry branches. http://www.nuzhuoasu.com/oxygen-plant/