and my country’s import and export scale continues to expand.

ion exchanger refers to an insoluble polymer substance containing several ionic groups, which can carry out an equivalent exchange reaction with ions in the solution. ion exchangers have the advantages of high selectivity, high product purity, long service life, and low production costs. they are widely used in water treatment, chemical separation technology, food processing, biotechnology and other fields. there are many types of ion exchangers.…