Lanzhou Refining and Chemical Environmental Protection Instrument Research Institute was established
Mr. Ji Guoliang, the founder of Lianhua Technology, led the research on the rapid determination of chemical oxygen demand at the Lanzhou Refining and Chemical Environmental Protection Instrument Research Institute and developed the COD rapid digestion spectrophotometry method, which achieved the "10-minute digestion, 20-minute value" rapid determination of COD in sewage
COD rapid determination instrument was included in the American Chemical Abstracts
COD rapid digestion spectrophotometry and rapid determination instrument were included in the American Chemical Abstracts as new contributions to the world's chemical field. ABSTRACTS” (Chemical Abstracts)
COD rapid tester passed provincial appraisal
After years of research, demonstration and testing, Lianhua Technology C-86-1 COD (chemical oxygen demand) rapid tester passed technical appraisal. This research result not only provides advanced means for COD determination, but also fills the gap in the production of water quality analysis instruments in the province
COD online tester passed provincial appraisal
Lianhua Technology LC-1 COD online tester passed the appraisal of Gansu experts, filling the gap in the field of national water quality online monitoring. In the same year, C-86-1 COD rapid tester won many awards, including: Gansu Spark Award, Lanzhou Science and Technology Achievement Third Prize
COD catalytic rapid method included in the water and wastewater monitoring guide
COD catalytic rapid method was included in the National Environmental Protection Agency. (1994). Guide to water and wastewater monitoring and analysis methods. China Environmental Science Press.
Lanzhou Lianhua Environmental Protection Technology Co., Ltd.
The company was officially renamed "Lanzhou Lianhua Environmental Protection Technology Co., Ltd."
Beijing Lianhua Yongxing Technology Development Co., Ltd.
Beijing Lianhua Yongxing Technology Development Co., Ltd. was officially established, marking the establishment of Lianhua Technology's national business territory
Online instruments won the honor of "National Key New Product"
5B-5 type COD online rapid tester won the honor of "National Key New Product", 5B type COD rapid tester won the honor of "Gansu Province Excellent Environmental Protection Practical Product"
Gansu Province High-tech Enterprise
Lanzhou Lianhua Environmental Protection Technology Co., Ltd. was awarded the "High-tech Enterprise Certification Certificate" by the Gansu Provincial Department of Science and Technology
COD rapid digestion spectrophotometry became a national industry standard
COD rapid digestion spectrophotometry officially became the "People's Republic of China Environmental Protection Industry Standard HJ/T 399-2007》and use
National marketing service network established and improved
The first national office meeting was held, and the national marketing service network was gradually established and improved
Lianhua Technology Headquarters moved to Beijing
Invested in the construction of Lianhua Technology Building, established a standardized production and R&D base, and moved the headquarters from Lanzhou to Beijing
Invention patent product BOD meter
Developed and produced an intelligent pressure-sensitive BOD meter using the "mercury-free pressure difference method" technology, and the product obtained an invention patent certificate
Beijing High-tech Enterprise
Won the Beijing High-tech Enterprise Certificate
EU CE Certificate
Obtained the EU CE Certification Certificate
ISO Three System Certificate
Obtained ISO Quality, Environment, Occupational Health Three Systems Certification certificate
Environmental Protection Corporate Social Responsibility Guide Group Standard
Participated in the formulation of the "Environmental Protection Corporate Social Responsibility Guide Group Standard"
Beijing "Specialized, Specialized and New" Enterprises
The fifth batch of Beijing "Specialized, Specialized and New" small and medium-sized enterprises in 2021
40th Anniversary Celebration---Tribute to China's Water Quality Guardian
818 Anniversary Celebration Live Broadcast Ceremony, New Corporate Logo and Corporate Culture Release
Ningxia Hui Autonomous Region Consumables Production and R&D Base Settled and Put into Production
10,000㎡ Consumables Production and R&D Base Located in Suyin Industrial Park, Yinchuan City, Ningxia Hui Autonomous Region, with 4 automated consumables production lines
LHOS Operating System Released
Newly developed LHOS Android water quality detection system, launched Xinyu, Qinglan, Qingmiao series product lines
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