During the incident of the dead pigs in the Huangpu River, the playwrights assembled sixty-six microblogs for domestic water purifiers, allowing Blue's nanofiltration water purifiers to become popular with the public as they panic about drinking water problems.

In the brand promotion of Sanda's water purification equipment, the most important staff may be Lan Weiguang himself.

The chairman of the board of directors of Sanda Group and the vice chairman of the National Film Industry Association have completed the industrial chain layout of "membrane material-membrane equipment-membrane software-membrane application" and brought the membrane technology from the pharmaceutical industry to industrial wastewater and municipal sewage. After dealing with the field, spending more time in the net water for civilian use.

Dr. Lan Weiguang, who he personally handled, published tens of thousands of pieces of information on Sina Weibo. Basically, every three or four times, there is a knowledge of water science that includes a “small advertisement” for nanofiltration.

Lan Weiguang's "Populator Workers" and "Salesman" programs started several years ago. Before and after 2007, he issued signals for entering the field of clean water for civilian use in various magazines and the company's 2007-2009 annual report.

In his opinion, under the persecution of a series of factors such as the backwardness of tap water treatment technology, pollution prevention of pipe network, and secondary pollution of high-rise water tanks, there are few other effective solutions in addition to control of gates from tap water use. The principle of membrane treatment of industrial production and domestic water is similar, and the development of civilian purified water market is technically feasible.

Xu Zhengjun, Managing Director of Qingyun Venture Capital, who participated in the investment in Gengyuan Water Purification, told this reporter that the domestic water purification terminal equipment was viewed as good for many reasons: As the quality of foreign raw water is good, the water purification equipment is simple, “but to the domestic, the original two technologies Water treatment problems that can be solved by integration can take four or more.” In contrast, domestic companies are more aware of national conditions and regional water quality, and are more competitive in terms of personalization.

According to Lan Weiguang's explanation, the nanofiltration cartridges used in Sanda water purifiers take the route between ultrafiltration and reverse osmosis, and combine the characteristics of nanotechnology and activated carbon to retain foreign micro-pollution in water. Can also retain the naturally occurring minerals in the water.

The reserve of this technology starts earlier. Actually, in the purification of drinking water, a variety of different properties of nanofiltration membranes are available depending on the quality of the raw water and the requirements of the purified water. However, most of the commercial nanofiltration membranes have excellent performance in the interception of micro pollution. Preserving minerals, especially the calcium, magnesium and other bivalent ions that the human body needs, are powerless.

Lan Weiguang's team has developed a composite ceramic nanofiltration filter with the help of German nanometer experts in order to break through this technical barrier. After the R&D was completed, Lan Weiguang first launched a free model in Xiamen, inviting high-end customers to try out more than 2,000 nanofiltration water filters, and officially entered the civilian market only two years later.

Obviously, the dispersion of drinking water safety problems throughout the country is “blowing” the consumer demand of the water purification industry. According to market participants, the water purifier is far beyond the gross profit margin of traditional household appliances and the profit that is continuously obtained through sales of consumables such as filter cartridges. Both large and small companies are rushing to the market. Recently, Haier Electric and Dow Chemical have joined Dow's reverse osmosis technology with pure physical filtration to enter the high-end water purification field.

However, the volume of Sanda's arrival from technology to the civilian market has not been realized.

For the reasons, it is not difficult to find that there is a big difference between the industrial and consumer goods fields, and the business models are not the same. “Industry looks at the effect, there are experts to judge; ordinary people look at word of mouth and see the brand effect”, for an ordinary consumer, the shelf of the same water purification equipment, Sanda’s “nanofiltration” brand slogan, and other ultrafiltration Together, craftsmen are often just one of the dazzling concepts for consumers. Behind all the concepts, there is no unified national standard.

Another investor who is concerned about this field told reporters that even if technology conversion can be achieved, there is no lack of precedents for successful industrial-to-civil transfer. Companies including Bishuiyuan's engineering origin have also begun to expand water purification projects for civilian use. However, if there is a lack of brand promotion channels and sales service capabilities, this transformation will be difficult.

Although Lan Weiguang ran for the nanofiltration water filter on Weibo, even from the internal view of Sanda, the attempt of civilian equipment still needs further efforts. In fact, due to the company's industrial genes, Sanda's investment in civilian business is relatively cautious, and it can even be described as "nearly minimal."

"If Dr. Lan wants to truly realize his civil future, it is far from enough to rely on personal brand promotion." One person familiar with Sanda pointed out to reporters.