The tungsten bead pad for grenade is a prefabricated killing element assembled in the axial direction of the ammunition. It can provide a killing element gain of 35 to 600 pieces for the axial direction of the ammunition. The projectile structure is made of a hard aluminum alloy body with a grooved square wire. The prefabricated fragments and high-energy explosives are made of prefabricated tungsten bead pads, which make the shape of the fragments more regular, the flying angle of the fragments more reasonable, the killing power is greater, and the function of burning and arson is to improve the killing efficiency of the grenade ammunition products.

Although the porthole of the Boeing 787 has no visor, it can change the transparency. You only need to press the button, and then transparency-changeable porthole will become completely dark. Of course, the captain can also dim directly from the cockpit when the night falls. In addition, because the color change process of this transparency-changeable porthole is gradual, you don't have to worry about the eyes being uncomfortable. What's more, when an unexpected power outage occurs, the portholes become completely transparent and comply with relevant aviation standards. The key is the tungsten oxide electrochromic film applied on the porthole. To understand this, we need to know what is electrochromism ?

Nowadays, the International Thermonuclear Experimental Reactor (ITER) has been built in France. The plasma-facing material is an urgent problem to be solved for ITER and future commercial fusion reactors. It is directly related to whether commercial power generation in fusion reactors can be realized in the future.

Smart Home makes our home life more comfortable, safer and more convenient! It is also energy-saving and environmentally friendly, and it also makes our life quite artistic. The smart sunroom is one of which. The basic characteristic of the smart sunroom is to permit abundant sunlight in. Thus a large area of glass wall has been always applied on it. What makes it smart is the temperature adjustment function, which keeps the room from too warm or too cold. What conflicts is that the major source of heat comes from the sunlight through the glass, wherein the ultraviolet (UV) rays and infrared radiation carries the most percent of heat. Therefore it is necessary to find a heat-insulating coating with ultraviolet sunlight & infrared radiation blocking functions for the glass wall. The nanometer tungsten oxide is considered as a suitable material.