The adsorption and separation technology that Sunresin is engaged in is a highly efficient separation and purification platform technology with strong environmental friendliness, high automation, and good operational accuracy. As a leading global company in the adsorption and separation technology industry, we have been actively considering how to integrate our more than 20 years of research and development accumulation and technological advantages in the field of adsorption and separation with the national carbon neutrality path to contribute to the achievement of the dual-carbon goals and help optimize and upgrade downstream application processes.

The ion exchange process is an effective and mature process technology in the demineralization and decolorization of citric acid, and is widely used in the industrial production of citric acid. However, the high osmotic pressure of citric acid causes repeated expansion and contraction of the resins during the fine purification process, and makes the resins bear a huge osmotic pressure, especially for anion exchange resins. Under this condition, the resins can be easily broken, reducing the service life of the resins and increasing the cost. This has become a common problem that holds back the development of the industry, and there was a strong call for a solution.

Vanadium is a silver-white refractory rare metal. It is ductile, hard, non-magnetic, and resistant to corrosion. Given its stable features in alkali, sulfuric acid and hydrochloric acid, it is widely used in machinery, automobile, shipbuilding, railway, aviation, bridge, electronic technology, national defense and other industries.

In the purification process, Sunresin’s uniform-particle-size ion exchange resin, specifically developed for lactic acids, removes impurities, ashes and proteins from the lactic acid fermentation broth, in order to provide high-quality raw materials for the synthesis of polylactic acid.

Sunresin's professional and clean packaging has been recognized by customers both in China and around the world.

In nature, substances appear in the form of mixtures. This rule applies to our most common, simple, and indispensable sunlight, air, and water. The sunlight splits into seven colors namely violet, indigo, blue, green, yellow, orange, and red. Air is mainly composed of nitrogen, oxygen, argon, carbon dioxide and some other substances. The water we consume in our life also dissolves many ions such as calcium, magnesium, sodium, potassium, carbonate, bicarbonate, sulfate, and chloride ions.

In water treatment using Ion Exchange Resins, there are a number of points that need special attention.

Sunresin developed food grade Seplite® LSF983 series of macroporous weak acid cation resin based on a polyacrylate matrix. The Seplite LSF983® is very suitable for hardness (calcium and magnesium) removal from potable water (household water filters, pitchers etc), beverage and food applications. Besides hardness, it can also help to reduce certain level of heavy metals as Copper, Lead etc.