In recent years, the problem of soil pollution in our country has become increasingly prominent, posing a serious threat to the ecological environment, food safety and human health. Therefore, accelerating laboratory technology to the project site is an urgent requirement to improve the soil environment in our country. What are the bottlenecks in the process of this transformation? First, there is a lack of a platform for technological transformation. It is necessary for the state to establish a tangible and intangible platform to promote the integration of industry, education and research, tangible methods include accelerating the establishment of national-level engineering and technology centers, etc., and invisibly encourage enterprises to take the lead or participate in the restoration of scientific research projects , And use various mechanisms to ensure the effectiveness of the platform. Second is the lack of technical engineering bearer - repair business, in particular, the lack of outstanding technical characteristics of the strength of the type of repair companies. In the coming years, the state should help domestic companies that have potential to rehabilitate and expand their scale, strengthen their capabilities, and accelerate the realization of engineering transformation through them in terms of policy support and tax incentives. The third is the lack of complete sets of technical support equipment, the current repair most of the more mature technology and complete sets of equipment used abroad, the cost of equipment is expensive to buy, high maintenance costs, can not reflect the practicality and economy of technology, limiting a lot of technical engineering Therefore, it is urgent to speed up the localization of engineering equipment. At this point, the government should support it through various methods. The fourth is the lack of engineering and technical personnel in the field of restoration. As China's rehabilitation engineering has just started its course and professionals with expertise in rehabilitation and experience are rare, it is suggested that some colleges and universities in the country adjust and establish the rehabilitation profession as soon as possible to face the market and develop professional counterparts In the context of the financial turmoil, personnel and other repaired talents from abroad will receive the olive branch thrown by the domestic repair enterprises. It is foreseeable that in the next year or two soil warfare on the market will be quietly war on human resources.
Green sand materials are very cheap and recyclable. They could be used to produce small and middle sizes and weights castings. In addition, this material is also suitable for both small amount and large batch production. However, it is only suitable for making iron castings, not for steel castings.
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