Beijing East Sunland S&T Co., Ltd., abbreviated as ESL, is a company engaged in the sales and service of scientific instruments and equipment. It is the * agent of world instrument manufacturers such as PARR from the United States, SIEBTECH from Germany, Normag from Germany, Faustke from the United States, ChemiSens from Sweden, etc. in China. The products represented are widely used in fields such as petrochemicals, metallurgy, biotechnology, pharmaceuticals, food, agricultural chemistry, and experimental analysis technology. Phone: 010-82843683/82843682/82843684/82843685