China's feed industry has experienced significant growth over the years, becoming the second-largest in the world. In 1997, the output of concentrated feed and premixed feed reached 7.01 million tons and 1.25 million tons respectively, showing a 71% and 73% increase compared to 1996. This period also saw rapid development in self-contained feed production.

The product structure is continuously being adjusted and optimized, with an increasing proportion of concentrated and premixed feeds. The quality of compound feed has improved, with some products reaching or approaching international standards.

The development of the feed industry in central and western regions has accelerated, with companies moving towards large-scale, group-oriented, and integrated operations.

In the 1980s, state-owned enterprises dominated the sector, but by the 1990s, with economic reforms, the ownership structure diversified, including private, township, and foreign enterprises, as well as shareholding systems.

Feed additive production has developed significantly, though it still lags behind the overall feed processing industry. Currently, more than 1,000 types of additives are produced annually, mainly lysine, vitamins, antibiotics, and minerals.

The feed machinery manufacturing industry has made considerable progress, with many products reaching advanced international levels.

A research, education, and quality monitoring system for the feed industry has been established.

Despite this growth, challenges remain. One major issue is the limited availability of grain, which is essential for feed production. China's per capita grain consumption is below 400 kg, with less than 20% of total grain used for feed. Only about 25% of feed grain is processed into compound feed, and there is potential to increase animal production by improving this ratio.

The relationship between the feed and aquaculture industries is interdependent, requiring coordinated development. Additionally, the raw material industry must keep pace with the growing demand from the feed processing sector.

Feed product quality remains relatively low compared to international standards, with conversion rates 20-30% lower. This leads to a cycle of low price, low quality, and low efficiency.

Process equipment also presents challenges. Domestic machines often lack stability, have short lifespans, and high power consumption. Large-scale equipment is still under development and relies heavily on imports. Equipment for resource utilization is not yet widely available.

Magnetic separation technology is crucial for removing metal impurities from feed. Simple magnetic separators like grid-type and slide-type devices are commonly used, though they may have lower efficiency. Permanent magnet cylinder and drum separators offer better performance, with iron removal rates exceeding 99%. These technologies help ensure feed quality and safety.

Industrial Sectional Door

Industrial sectional doors are the most durable and longest lasting doors to ensure circulation at the areas of the factory entrance and exit of goods, loading and unloading areas.

The body of sectional door is forming by 40 mm sandwich panels. These panels provides sound and heat insulation due to the intense doped polyurethane insulation was injected between galvanized steel sheet. (50 kg/m3).

Industrial sectional door systems provide space-saving with opening parallel to the ceiling.Any opening can be used clearly . and produces in accordance with the transition range and the height in the factory buildings or warehouses.

Doors is working sliding by be the most appropriate the gap between the top level of the gate with a ceiling height within the side rasils. The door can be mounted in different ways according to the gap distance (standard, low, highlift and vertical track systems).

Industrial sectional doors can easily be opened automaticly by 230-380 V-AC/50 Hz electric motor or manualy thanks to torsion spring system that balances the weight of the door.The galvanized springs are made to be durable of 25.000 door cycles.Motor with emergency chain All the drive systems have a mechanical back-up system fitted to the reduction gearbox of the electric motor, so that the sectional door can be opened if the power fails. The reduction gearbox can then be powered using the chain.

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Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hongfadoor.com