Green building is an important embodiment of an efficient, simple, livable and sustainable city. China's Ministry of Construction and Ministry of Science and Technology for the "Tenth Five-Year" national key project of science and technology research on green building key technologies, mainly on China's green building development model has a new understanding in order to achieve leapfrog development of the construction industry. 1. The connotation of green building Green building is also a sustainable ecological building. It refers to saving resources (saving energy, saving land, saving water, saving materials) to the maximum extent within the entire life cycle of a building, protecting the environment and reducing pollution, and providing people with healthy, suitable and efficient use of space. Its architecture and natural symbiosis , Is recyclable and sustainable. Green buildings provide people with healthy and safe living space while also having the lowest environmental impact, so low energy consumption is the most important feature of green buildings. Low-carbon model of green building refers to the use of eco-building, energy-saving technologies, eco-materials, etc. from building materials, equipment to construction, to the use of buildings throughout the life cycle, so as to reduce material consumption and improve energy efficiency, thus achieving low carbon building Built building. 2. China's green building problems At present, the construction of urban and rural areas in our country is still a pattern of extensive growth, mainly manifested in the following aspects: only focusing on the quantity, ignoring the quality, low land use efficiency, too few applications of renewable energy buildings and short service life of the building; Use of the overall level is not high, a variety of waste is very serious. Mainly in: 2.1 do not know the place Now that the concept of green has become a household name, some people still do not have enough understanding of the concept of green building. For example, some developers use "green building" as their slogan in real estate sales and people mistakenly confuse green building with high-end building. Some people also think of green buildings as green buildings in the surrounding area. In fact, green buildings not only focus on the building's surrounding environment Also emphasize the building itself. In general, green buildings emphasize energy saving, greening and water saving. Therefore, green building includes many aspects instead of just greening. 2.2 green building key technology research and development and application of less There are few technological innovations in green building and green building related technologies with independent intellectual property rights are slow to develop. China's green building for the key technologies, products, software and equipment independent research and development are relatively slow. Should increase investment in science and technology to speed up the green building of basic and common technology research and development and industrialization process. 2.3 Technical standards need to be further improved June 1, 2006 "Green Building Evaluation Standards" (GB / T-2006) was officially promulgated and implemented, due to over-hype by businesses and green building concept can not be confirmed. Although the Ministry of Construction of green building evaluation marking work has officially started, but there are many real estate developers have not been recognized as the standard of their own buildings are green buildings. This requires us to further improve the technical standards, all buildings should be rigorous green assessment of the building energy-saving design, construction, acceptance, testing and operational standards to further improve. 3. The principle of green building  In general, the principle of green building should follow: 3.1 applicable technology. Some people mistakenly think that green building is a very expensive and expensive building. In fact, the green building adopts the applicable technology to reduce energy consumption, such as natural ventilation and wall insulation, and energy saving and ecologicalization can be achieved through the use of wind and solar energy purpose. 3.2 life cycle assessment. From the production of building materials to the construction of buildings will produce the corresponding emissions, waste. Green building is very focused on energy-saving emission reduction and construction after the end of life cycle and so on.
Compared to traditional bicycles, folding bicycles can be more convenient to use.
The small size of the foldable Bike allows you to take it on buses, subways and other means of transport or in lifts, making it the best choice for convenient urban commuting. You can easily put it in the trunk of your car and take it to your destination to ride your bike, and it's affordable, compared to mountain bike road bikes which are more cost-effective in price. The Foldable Bike Parts usually cheaper than the mountain bike parts. Such as the Bicycle Hub, the frame, etc.
However, the drawbacks are also obvious; the folding frame are not as strong as the one-piece frame of a mountain bike, and climbing hills is more strenuous than with a mountain bike, btw, the front Folding Bike Hub is too small for force. It is slower and less comfortable than a mountain bike on long rides.
If you ride in the city, or go for a short ride once in a while, it is fine to buy a folding bike. If you climb a lot, like to go off-road, or ride long distances, the mountain bike or the road bike is more recommended.
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