About us

Yuensun’s specialized quality control runs through its entire process from the selection of qualified raw materials (For example, the Lycium  chinense we used are from Ningxia province, the place is famous for it’s  Lycium  chinense)to the warehouse release of qualified final products, with test equipment including ceramic membrane separator, mid-pressure column separator, ELSD detector, fluorescence detector and much common equipment consists of high performance liquid and gas chromatographs, etc., full-time QC staff, whole set of QC standard procedures and complete/detailed test indexes.