The panel is composed of a panel and a supporting system, and the panel is a part of the concrete forming, and the supporting system is a structural part which is stable in the position of the panel and is subjected to the upper part of the load. Template is related to the quality of concrete engineering quality, the key lies in the accurate size, firm assembly, tight Pinfeng and convenient assembly and disassembly. Should be based on the form and characteristics of the building structure of the appropriate form of the template, in order to achieve a good technical and economic results. At present, the domestic construction template of the raw material mainly has the following several: A, the most traditional wooden template, more common is Yang wood formwork and pinewood template, this template is relatively light, slightly lower costs, but durability is not too good, and reuse rate is very low. Two, steel template, as the name suggests is steel, the intensity is very large, but the weight is too heavy, repeated use of good, high cost. Three, plastic template, not afraid of water, the cost is low, durable, but the strength is not enough. Compared with the domestic situation, the application of building formwork: And our big is not the same, the European and American countries have begun to use aluminum alloy to produce construction template, rather than using the steel we usually use. Compared with the steel template, the strength of aluminum alloy and is not afraid of water, because aluminum alloy does not rust, and at the same time with a heavy steel compared, the weight of the aluminum alloy to a lot of light, more conducive to building engineering construction. Cost, although it is made of alloy, but still much lower than the steel. At the same time, due to the full of fear of water, for a variety of poor environment to adapt to the more powerful, so the life is very impressive, the recovery rate is very high. The data statistics of several construction formwork in our country: Construction formwork is an important tool for the construction of concrete structures. Experts pointed out that in the cast in place concrete structure engineering, formwork engineering generally accounted for 30% to 20% of the cost of concrete structure engineering, accounting for 30% of the project labor amount to 40%, accounting for about 50% of the time limit for a project. Formwork technology directly affects the quality, cost and benefit of project construction, so it is an important content to promote the progress of construction technology in our country. With the hot real estate industry in China and the construction of the project repeatedly launched, the template industry to rapid development. According to the relevant data show that in 2013 the amount of China construction template more than 800 million square meters. According to statistics, in 2009 China's steel template market size of 153 million square meters, an growth rate of 6.9%. Including the combination of steel plate and the whole steel template, including the steel production of 39 million 700 thousand square meters, an growth rate of 6.6%%. Annual new production steel mould converted into a weight of about 300 million tons, equivalent to 43 France Eiffel tower steel dosage (Eiffel tower steel consumption 7 million tons), 27 Beijing's bird's nest steel dosage (Beijing bird's nest steel consumption 11 million tons), 3.7 seat of Hangzhou Bay Cross Sea Bridge, the steel amount (Hangzhou bay cross sea bridge steel consumption 80 million tons). 2009 wood plywood formwork market size of 3 million square meters, year on year growth of 8.4%; its annual output is 77.3 million square meters, year on year growth of 9.7%. Bamboo plywood template market size of 122 million square meters, an increase of 7.9%; the annual output of 31 million 400 thousand square meters, an increase of 9.1%. Each year there are nearly 110 million square meters of bamboo / wood production building templates. According to estimates, for the production of these wood templates, every year to cut 16 million trees 30 cm in diameter, that is, 10 thousand hectares of forest area. This 10 thousand hectares of forest, can produce 2 million 700 thousand tons of oxygen per year, can absorb 3 million 600 thousand tons of carbon dioxide per year, can absorb 1000 tons of sulfur dioxide a year, can be adsorbed / block 120 thousand tons of dust. Trends in the coexistence of a variety of building templates: The last century at the beginning of 70s, China's building structure with brick and concrete structure, construction template template based on wood. In the early 80s of last century, all kinds of new structural systems have appeared, and the concrete structure has soared. Because of China's timber resources are very scarce in "with steel instead of wood" policy to promote, China successfully developed the combination steel template advanced construction technology, reform the formwork construction technology, save the vast quantities of timber, steel template application has reached more than 75%%, steel template factory production has reached more than 1000, steel formwork leasing enterprises had reached more than 13000, in saving and substitution of wood about 15 million cubic meters, and achieved significant economic effect and social effect. Since the 90s of last century, the building structure system of our country and the great development, construction of a large number of high-rise buildings, high-rise buildings and large public buildings, the rapid development of large-scale infrastructure construction, urban transportation and highways, railways and other, of formwork and scaffold construction technology of proposed new requirements. China continues to introduce foreign advanced mold system, also developed a variety of new formwork and scaffolding. At present, our country has broken through the pattern of combined steel formwork, which has been gradually transformed into the pattern of coexistence of various patterns, and the application of combined steel formwork is declining. And now phase aluminum template in the construction formwork field proportion is very low, aluminum template in the comprehensive index of environmental protection, performance, cost and other projects has the advantage has been widely recognized, as long as do the promotion in place, market development potential is huge and look forward to aluminum formwork industry to flourish, and overcome the shortcomings, to solve the excess capacity of electrolytic aluminum, development of the industry, the national construction and make new contributions.