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At present, the raw excipients used in the production of solid phase peptide synthesis raw materials are mostly produced in China. The whole East Asia region is also the main region of raw excipients supply for solid-phase synthetic polypeptide raw materials in the world. When choosing raw materials and accessories, we should consider the quality, price, process matching and other aspects. The extreme value of a single parameter is often confirmed to be not the optimal choice.

Compared with small molecule chelating agents, chelating resins have the advantages of simple synthesis, low cost, large adsorption capacity, easy elution, less interference, good mechanical properties and it is extremely stable for acids, bases and various solvents. Compared with ion exchange resins, chelating resins have stronger binding ability and higher selectivity to metal ions. When chelating resins chelate with specific metal ions, there will be many special physical and chemical properties, which are widely known as catalysts, photosensitive materials and antistatic agents.

Chelating resins are widely used in hydrometallurgy, analytical chemistry, marine chemistry, pharmaceuticals, environmental protection, geochemistry, radiochemistry and catalysis. In addition to being a metal ion chelating agent, it can also be used as a catalyst for oxidation, reduction, hydrolysis, olefin addition polymerization, oxidative coupling polymerization, and for the resolution of racemates of amino acids and peptides.

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New production unit inaugurated in Gaoling, Xi'an, Shaanxi province Annual capacity increased by 20.000 tons for specialty Ion Exchange Resins and Adsorbers Strong demand in Industrial and Drinking water, Electronic, Food transformation as well as specialty areas.

The immobilized enzyme is a biological reagent with high efficiency, high selectivity and mild reaction conditions.

In the immobilized enzyme technology, factors such as the active group, the microenvironment, and the shape of the carrier on the carrier material may affect the affinity of the carrier and the enzyme, the activity, stability, reusability and recyclability of the immobilized enzyme.

Adsorbent resin, also known as polymer adsorbent, is a kind of high molecular polymer which has the function of adsorption and concentrates and separates organic matter.