1. there are famous chinese and foreign celebrities, li shizhen, a native of the ming dynasty, a great medical scientist and pharmacist, author of compendium of materia medica, zhang haidi, who suffered from spinal cord hemangioma at the age of 5 and had high paraplegia. in his childhood, he began to learn knowledge with tenacious perseverance and taught himself professional courses in elementary, middle school and university. nobel, nobel is an inventor who devotes himself to chemistry research. hawking, the most outstanding theoretical physicist in the contemporary era, a giant in science, and the introduction of famous chinese and foreign celebrities, besides a year in prague, einstein was in 1... nanjing dehua control technology co., ltd.'s business mainly represents the sales and after-sales service of imported analytical instruments, pre-processing and production of analytical instruments, and online analysis table system integration. currently, it is a mainstream supplier of sinopec analytical instruments. main agent switzerland 10 provided only 10 people

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