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/p

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/

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

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

Metal pipe and tubing are everywhere in automotive, aerospace, industrial, architectural, research, and medical applications. The most common elements are aluminum and stainless steel pipe and tube materials, and each has attributes that make it the right choice for a given industry. Once you’ve determined whether you need piping or tubing, next you’ll want to choose the best metal for your application.
http://www.tubepipemill.com/steel-tube-mill/