It was reported the first 120 kg sapphire crystal is produced in Nanchang optical valley. The largest sapphire production will not only further promote Jiangxi LED lighting industry, smart phone industry development, but also will greatly promote the development of China tungsten and molybdenum industry development.

 

Nanchang High-tech Zone is the core area of Nanchang optical valley, mainly to R & D strength silicon-based LED technology and applications, and to develop sapphire substrate LED chips production. Sapphire is the main material for LED preparing, the largest sapphire crystal produced by this institution, which will promote the development of LED technology, greatly expanded the application of LED light. It expected in 2020 the earnings of LED industry will be more than one hundred billion RMB, accounting for 15% of China industry revenue which the silicon substrate LED technology revenue will reach fifty billion RMB. Sapphire crystal has high strength and good wear resistance, so it is commonly used in the smart phone industry, often used to make phone lens cover, screen and home button and so on. Therefore, the development of largest sapphire can promote smart phone industry development. In addition, the sapphire crystal also can use in infrared military installations, satellite space technology, and high-intensity laser light as an important window material.

 

Sapphire production need to melt Al2O3 raw material at 2050 ℃, and then after cooling to form crystallized by a single crystal. Therefore, sapphire crystal growth furnace is used for crystal growth usually made of tungsten thermal field with excellent high temperature property, including tungsten crucible, columns, trays, chassis and other components. Tungsten thermal field is the central part of sapphire crystal growth equipment and is made of the heat, the support, the insulation three systems and seedholder and other accessory. High quality thermal field products will significant influence sapphire crystal quality. Sapphire crystals are widely used in many industries, so it is conducive to the development of tungsten thermal field and other related industries.

2016 PDC Chinese tryout is in full swing, the competition attracts many darts fans to participate, they want to show their strength in a fair and just stadium, and duke it out with many excellent dart players. Darts’ use plays an important role in a dart competition it can be described that it is essential for the final result. Tungsten darts have excellent hand feeling and are easy to control, that is why they can be welcomed by many darts players. The PDC's tryout is planning to divide into 10 tryout stations, including the successful ending of April 2 Qingdao station, April 9 Guangzhou station. In these 10 tryout stations, the first three stations is the selection of the World Cup 2016 qualification; the middle four stations, namely stations 4-7 is the selection of Shanghai Masters qualification; the last three stations is the selection of World Championships qualifications.

 

The third tryout trials will be carried out in Ningbo, April 23. The first two stations, Dawei Zhang gained the total score of 2: 1 and defeated the second player Li Weihong, got the first qualification of PDC World Cup 2016; and players Ouyang Bin, who came from Hunan 2: 1 defeated his opponent Hu Ling, who came from Hubei and won the victory in Guangzhou station. The China World Cup qualifying finals will also be held in Ningbo in April 24, therefore to select the top two players and they are on behalf of China to participate in the 2016 World Cup held in Germany in June 2016. Since the later tryouts are not associated with World Cup qualifications tryout, and therefore not yet notified the specific time and place of the game, and the subsequent news that we will follow closely. As a kind of the high-quality darts with a stable performance, high density, small air resistance, and non-toxic and environmentally friendly, tungsten darts have its own outstanding and excellent performance and are assisting for the 2016 PDC Chinese tryout.

 

Sewer is the integral part of infrastructure in a city which plays an irreplaceable role in the living environment of safety, construction and comfortable. In recent years, the corrosion degradation has caused many social problems, such as the collapse of the road, and thus attracted widespread attention.

 

Sewer corrosion mainly brought out by the oxidation of sulfur-oxidizing bacteria and generated the sulfuric acid and hydrogen sulfide which constantly corrode the pipe surface. In the past, anti-corrosion protection of concrete structures sewer facility is mainly used in the surface coating or a coating method for coating a sheet of resin-based material. These methods have a big challenge in terms of construction; besides, the adhesion and anti-scratch is weak; with relatively short life (only 3 to 6 years). Therefore, a new material with strong anti-corrosion is called.

 

Recently, studies have shown that tungsten oxide and nickel as the antimicrobial agent doped in the concrete, pays the role of inhibiting the sulfur-oxidizing bacteria antibacterial activity, is a new anti-corrosion material with excellent durability. Sulfur oxidizing bacteria is acidophilus which the optimum growth pH range is 2~3; tungsten oxide dissolved in the acid which can inhibit the growth of sulfur-oxidizing bacteria with the joint function of nickel, thereby suppressing the formation of sulfuric acid. Compared to ordinary concrete, the corrosion depth of this concrete is only 1/5 of it, and the sulfur penetration depth of about 1/4 of it; presumably, that anti-bacterial concrete contains mixtures of tungsten oxide and nickel can ensure 50 years of standard service life. In addition, the experimental results of elution maximum body and toxicity of the antimicrobial concrete have shown that its toxicity is very low and does not cause adverse effects on the environment; what the most importantly is that as a building material, it doesn’t causes any negative effect compressive strength to concrete.

In early March 2016, Chinese Darts Association issued the notice about the 2016 China University’s Darts League (CUDL). It is composed of races and finals; the playing time is from the beginning of April 2016 until the end of December. The races’ places can be arranged in chronological order as follows: Beijing Station in April, Hainan Station in May, Shanghai Station in June, Tianjin Station in July, Qingdao Station in August, Harbin Station in September, Guangzhou station in October, Jinan Station in November, and Nanjing Station in December. Contestants are college students of major colleges and universities in the way of the team or group. Each school can choose to send four teams; each team must be not less than 4 people and have a female member at least. Competition is divided into community groups, women's groups and men's groups, if the group integration standings of the previous 64, women's and men's athlete's personal ranking the first 128, then can enter CUDL finals.

 

This competition obtained great attentions of China’s major colleges and universities, and the darts that being welcomed by many participants are mainly tungsten dart. Usually tungsten dart for game is made of 90% tungsten, because the tungsten content is too high will increase the brittleness of darts, it will occur the fracture problem if do not use carefully. Due to the high density property of tungsten alloy, it can achieve high specific gravity with small size. That tungsten darts volume can be made very small, but the weight and hand feeling is still the same, and will be very easy to carry. That is why a tungsten dart is welcomed by people. In addition, tungsten dart with good stability and maneuverability is easy to control, so it is the first choice of dart for many people in competition, and being greatly popular among the participants of CUDL. We will continue to focus on the subsequent game messages.