With the continuous escalation of emission standards, the post-processing system industry has also seen rapid development. The market has expanded rapidly and a number of domestic companies have sprung up. As of the end of 2009, there were more than 100 companies involved in the automotive exhaust gas after-treatment industry chain (excluding accessory catalytic converters), of which more than 20 carrier production companies, more than 10 catalyst coating companies, and insulation pad companies 4 Above home, catalytic converter packaging companies more than 60. At present, there has been a situation of professional division of labor and mutual support. The post-processing system consists of several parts. The following is a brief description of the development of the main sub-sectors of post-processing systems in China. 1. Exhaust gas aftertreatment system carrier sub-industry The main forms of exhaust gas aftertreatment system carriers include ceramic honeycomb carriers, metal honeycomb carriers, and various forms of particulate traps (DPF) used in diesel engines. Ceramic honeycomb carriers are mainly used in gasoline three-way catalytic converters, diesel oxidation catalytic converters (DOC), and diesel selective catalytic reduction systems (SCR). The metal honeycomb carrier is mainly used for diesel partial-flow particulate filter (POC), selective catalytic reduction device (SCR), and three-way catalytic converter for motorcycles. DPF mainly uses cordierite, silicon carbide or aluminum titanate. With the increasingly stringent regulations on vehicle emissions, carrier research tends to develop in the direction of thin-walled and high-hole-density carriers. Major domestic companies producing ceramic carriers include: Corning (Shanghai) Co., Ltd., NGK (Suzhou) Environmental Ceramics Co., Ltd., Jiangsu Yixing Non-Metal Chemical Machinery Plant, and Jiangsu Gaochun Ceramics Co., Ltd. The main suppliers of metal carriers are: Germany-based Mitek Emission Control Technology Co., Ltd. and Nanjing Ikekat Environmental Protection Technology Co., Ltd., etc. The main companies that manufacture diesel DPF carriers are: Corning (Shanghai) Co., Ltd., NGK (Suzhou) Environmental Ceramics Co., Ltd., Yunnan Feierte Environmental Protection Technology Co., Ltd., and Guizhou Huangdi Vehicle Purifier Co., Ltd. At present, some companies have applied relevant products abroad to implement the Euro IV emission standards in the regions. Their carrier technologies are very mature and have the latest thin-walled, high-hole-density carrier production capabilities. In addition, some companies have been able to supply common ceramic honeycomb carriers and particulate traps in batches in terms of technology reserves. The products are technically in line with the requirements of the National IV standard and have corresponding application examples. However, they are also consistent with product consistency. There are some gaps in international mature products. Therefore, the technical preparations for major carrier manufacturers in China have been very thorough. From the point of view of production preparation, some of the companies currently have localized production of some of their products in China, and there are corresponding products that are used in national IV models and models. Given that the current market share of China IV diesel engines is relatively small, some manufacturers mainly import corresponding products from abroad to meet domestic demand, and some manufacturers have already set up domestic carrier production lines that meet the national IV standard for heavy-duty diesel engines. 2. Catalyst coating sub-industry The catalyst is the core component in the post-processing system. The composition, content and coating level of the catalyst are important indicators of the performance of the catalyst and directly affect the purification effect of the tail gas. At present, the main components of the catalyst used in automobiles include precious metals, vanadium-molybdenum-tungsten compounds, and iron-copper molecular sieves. The main companies engaged in catalyst coating in the country are: BASF Catalysts (Shanghai) Co., Ltd., Wuxi Weifu Environmental Protection Catalysts Co., Ltd., Johnson Matthey (Shanghai) Catalyst Co., Ltd., Umicore Automotive Catalyst (Suzhou) Co., Ltd., and Kunming Guilin. Catalyst Co., Ltd. and Fujian Chaori Environmental Protection Technology Development Co., Ltd. etc. In terms of technical reserves, major companies have already been able to coat the National IV diesel engine aftertreatment catalyst. Most of the catalyst manufacturers have set up R&D centers in the country, stating that the company pays great attention to improving R&D capabilities to meet market requirements. In terms of production preparation, most of the products produced by current enterprises are mainly used to satisfy the coating of catalytic converters for gasoline vehicles and DOCs for diesel engines. For the SCR system coating required by the National IV vehicles, many companies have already met the technical preparations. However, due to the uncertainty of the implementation time in the future, not yet mass production, some companies adopt the method of coating catalysts abroad. To meet the needs of the domestic market, after the increase in the scale of demand, it will be turned into a domestic supply mode. According to another understanding, some companies have introduced large-scale carrier coating equipment and other equipment in accordance with the implementation plan of the State IV emission regulations, and increased investment in 2009. 3. Pad sub-industry Exhaust gas aftertreatment system The ceramic expansion seal gasket is one of the important components of automotive catalytic converters. It is located between the carrier and the housing. It is mainly used to protect the core of the catalytic converter. The ceramic honeycomb catalyst carrier is not damaged and is fixed. The role of the carrier and vibration damping, and has a good airtight and thermal insulation. Its excellent thermal expansion performance solves the significant difference in thermal expansion between the ceramic carrier and the metal shell, so that the ceramic carrier is protected from uneven road impact and vibration, and the performance of the automotive catalytic converter is ensured. The main companies that manufacture catalytic converter liners in China are: 3M (China) Co., Ltd., Qi Nai United Fiber (Shanghai) Co., Ltd., Linhai Bangdeli Automotive Environmental Technology Co., Ltd. and Shanghai Aesop Thermal Energy Technology Co., Ltd. As liners mainly serve as a fixed carrier for vibration damping, sealing, and heat insulation, liners in Phase IV of the country are basically similar to other emission standards, and no special upgrade reserves are required for the technology. Technical capabilities and production capacity can be achieved. Meet the implementation of the diesel IV standard. 4. Catalyzer packaging sub-industry The exhaust gas after-treatment system catalytic converter package is mainly used to protect the carrier in the catalyst, so that the engine exhaust can fully contact the carrier catalyst. The catalytic converters are roughly classified into three types: clamshell type, bundled type, and plug-in type. The main companies engaged in catalytic converter packaging in China are: Wuxi Weifu Lida Catalytic Converter Co., Ltd., Emcom Environmental Technology (Shanghai) Co., Ltd., Tenneco Tongtai (Dalian) Exhaust System Co., Ltd. and Shanghai Tianna Exhaust System Co., Ltd., Cummins Emissions Treatment System (China) Co., Ltd., Suzhou Pageli Emission Reduction Systems Co., Ltd., and Beijing Lvhuang Environmental Protection Equipment Co., Ltd. After years of development, packaging companies have basically formed a complete system of packaging capabilities, product performance is maturing, some companies have small batches of supporting applications in major cities in the country, some companies large-scale carrier packaging capabilities are under construction. In addition, the heavy-duty diesel vehicle after-treatment packaging technology is not too large compared to the gasoline engine three-way catalytic packaging technology. Moreover, the main packaging companies have sufficient production preparations and mature technologies. A few companies have stepped up their research and development and follow-up, and will be able to meet the standards implementation requirements in due course. 5. Urea spraying sub-sector When the heavy-duty diesel engine IV standard adopts the SCR technology route, in addition to the requirement for a complete set of tail gas after-treatment system, a set of urea injection system is also required. This system contains three key components: a urea nozzle, a urea dosing pump, and a urea injection control system. At present, the Urea metering pumps and urea nozzles in the industry are mainly produced by products of Bosch, Wuxi Weifu Lida, Grundfos, Cummins, Tenneco, and Albonair. The control system is mainly controlled by Bosch and SCR packaging plants. In the urea injection system, the products that are currently mature and applied are mainly imported products. There are also related companies in China that are conducting research and development, such as Wuxi Weifu Lida Catalytic Purifier Co., Ltd., Wuhan Tim Blue Engine Emission Control Technology Co., Ltd., Suzhou Paige Emission Reduction Systems Co., Ltd., and Wuxi Kailong Auto Equipment Manufacturing Co., Ltd. Independently develop urea key components and control systems. Foreign-funded enterprises have matured in urea injection technology, and some companies have begun to increase production equipment or increase investment. Independent companies such as Wuxi Weifu Lida Catalyzer Co., Ltd. also bear the national “863†project, and the production capacity will also increase rapidly. Therefore, the key parts and components companies of urea injection system have been actively preparing, and the production capacity will quickly increase in a short period of time. Shipping Box,Carton Shipping Box,Printed Shipping Boxes,Shipping Moving Box Zenghui Paper Package Industry and Trading Company , https://www.packagebox.nl