Biotechnology research and development; operations without storage facilities (no samples on site, no equipment warehouse, only engaged in bill exchange operations): bromine, sulfuric acid, hydrochloric acid, hydrobromic acid, sodium hydroxide, methanol, ethanol [anhydrous ], sodium hydroxide solution [content ≥ 30%], 1-bromopropane, 2-bromopropane, bromoethane, sodium bromate, phenol, sodium hypochlorite solution [containing available chlorine > 5%], methyl bromide, bromobenzene, 2 -Propanol, 1-propanol, acetic acid [content >80%], cyclohexane, boric acid, sodium dithionite, potassium bromate: sales: microbial fertilizers, chemical products (excluding hazardous chemicals and precursor chemicals), Experimental analysis instruments, mechanical equipment and accessories, handicrafts (excluding cultural relics, ivory and their products), textiles, clothing, pre-packaged food, feed; operating the import and export business of goods and technologies within the scope of national permission (subject to approval according to law) Projects can only carry out business activities after approval by relevant departments)