1、 Chemical raw materials and intermediates

• Organic chemical productsSuch as phthalic anhydride, stearic acid, caprolactam, various dye intermediates (such as H acid, J acid), etc.

• Inorganic chemical productsIncluding potassium nitrate, ammonium chloride, nickel hydroxide, antimony trioxide, titanium dioxide, lithopone, etc.

• Fine chemical additivesSuch as catalysts (such as palladium carbon catalysts, molecular sieves), plastic additives (plasticizers, stabilizers), rubber accelerators (such as M, DM), etc.

2、 Pharmaceuticals and intermediates

• API (Active Pharmaceutical Ingredient)Sulfonamide drugs, antipyretic and analgesic drugs, etc.

• Pharmaceutical excipientsStarch derivatives, microcrystalline cellulose, dextrin, etc.

• Traditional Chinese Medicine relatedChinese herbal extracts (such as ginseng extract), Chinese herbal powders (Sanqi powder, Huangqi powder), plant extracts (lutein), etc.

3、 Food and food additives

• food ingredientsMilk powder, cocoa powder, glucose, maltose, sorbitol, crystalline fructose, etc.

• food additiveFood coloring agents (carmine, lemon yellow), preservatives (potassium sorbate), thickeners (xanthan gum, guar gum), etc.

• Raw materials for health productsProtein powder, probiotic powder, spirulina powder, chitin, etc.

4、 Pesticides and pesticide intermediates

• Insecticides/fungicidesDuojunling, Baijunqing, etc.

• herbicideGlyphosate, Atrazine, Acetochlor and other raw materials and intermediates.

• plant growth regulatorGibberellin, naphthylacetic acid, etc.

5、 Mineral and metallurgical products

• metal powderIron powder, copper powder, aluminum powder, zinc powder, etc. (to prevent oxidation).

• Mineral processing productsKaolin, calcium carbonate (light/heavy), graphite powder, quartz sand, etc. (requiring low humidity drying).

6、 Other special materials

• polymer materialsPolyamide (nylon) chips, polyvinyl chloride (PVC) resin, epoxy resin, phenolic resin, etc.

• hazardous chemicalsCertain explosive and toxic materials (guanidine nitrate) are used to reduce volatile pollution in a vacuum environment.

Summary of selection criteria

1. Heat sensitivity (easily decomposed and discolored at high temperatures, such as in medicine and food);

2. Easy to oxidize (prone to deterioration upon contact with air, such as metal powders and certain chemicals);

3. Contains organic solvents (solvents that need to be recycled, such as dyes and pesticide intermediates);

4. Toxic/odorous (vacuum environment reduces volatile pollution, such as pesticides and certain chemical raw materials).