1, Wokai is a registered brand of high-quality and high-grade chemical reagents produced by Sinopharm Group. With strict production management, complete quality control and professional service level, we focus on providing all-round laboratory supplies and perfect laboratory solutions, including chemical reagents, instruments and equipment, laboratory consumables and laboratory furniture.

2. Shanghai Test is a registered brand of chemical reagents produced by Sinopharm Chemical Reagents Co., Ltd. ... Hu's brand trademark was officially announced by the State Trademark Office from April 1997, and its products cover more than 3,000 varieties of inorganic reagents, organic reagents, biochemical reagents, indicators, dyes, high-purity reagents and chromatographic reagents. The above is the difference between my exam and the Shanghai exam.