In 1995, we made and produced small PE, PEX series hubei breaker and PCB series crusher with 20 employees.

In 1998, the company produced single machines and simple complete sets of equipment for five series of feeder, jaw breaker, hammer breaker, vibrating screen and conveyor. The production base area reached 15 mu and the staff grew to about 50 people.

In 2000, in order to adapt to the rapid development of the mining industry, I started to set up my own research and development team, transformed from the imitation production to the integrated research and development, production and sales of mine machinery and equipment suppliers, and successfully launched the first three-chamber hydraulic impact crusher, compared with similar products, the production capacity increased by 30%.

In 2002, the after-sales service team was established to provide customers with a full range of professional services.

In 2004, longjian industrial group set up a marketing team to break through the bottleneck of enterprise development and achieved a sales growth of 50% in the same year.

In 2006, it established "chongqing longjian machinery manufacturing co., LTD.", the product quality passed iso9001:2000 international quality management system certification.
The number of employees exceeded 150, and the sales volume exceeded 100 million yuan.

In 2008, the company independently developed the first thin oil circular vibrating screen, which solved the problem of dustproof and waterproof in the harsh environment, and began to produce in small batches and put it into the western market, which caused a strong response and was called "western sieve king" by the majority of users.

"Longjian" brand has won the famous trademark of wanzhou district of chongqing -- "chongqing famous brand" product, and has become a domestic large and medium-sized enterprise in the same industry, with more than 250 employees.

Independent research and development of the first vertical shaft impact breaking, sand production rate increased by about 10% compared with similar products.
The r & d team expanded to more than 30 people.

Set up a foreign trade team, began to enter the international market, products exported to Africa, South America, South Asia, west Asia and other countries and regions, in the overseas market has gained a good reputation.

Successfully developed and produced the first single cylinder hydraulic cone beer and multi cylinder hydraulic cone beer.
Its high quality, high standards, high requirements of the product quickly in gansu, qinghai, xinjiang and other western provinces share a place.

Based on the former chongqing longjian machinery manufacturing co., LTD., sanming heavy industry co., ltd. is established to produce high-end crushing and screening equipment (such as cone breaking and impact breaking, etc.) and provide one-stop solutions for large-scale stone processing.

The company invested 150 million yuan to successfully settle in wanzhou jiulong industrial park, covering an area of 150 mu, 6 standard factories, covering an area of more than 40,000 square meters, with more than 500 employees (including more than 100 senior technicians and more than 20 direct sales teams).

In 2020, longjian group will set out to make a breakthrough and take off!

Planning an ipo.
Chongqing longjian industrial group co., LTD was established, with longjian machinery, sanming heavy industry, longbo casting, stonewall technology, klaas trowel environmental protection technology, chongqing wanzhou hujiang wood-based panel factory co., LTD and many other molecular companies.