1. Vegetable oil: sesame oil with a pure texture is better. Its advantage is less foam during refining, which is conducive to operation. And the made plaster has bright color, stickiness and good quality. Cottonseed oil, rapeseed oil, peanut oil, etc. can also be used, but soybean oil is not suitable.
2. Huang Dan: Also known as Zhang Dan, Lead Dan, Hong Dan, Tao Dan, orange-yellow, heavy, powdery, mainly becomes lead tetroxide, with a purity requirement of 95% or more. (Can be bought in large pharmacies or chemical stores)
3. Treatment of medicinal materials: medicinal materials can be divided into general materials (coarse materials) and fine materials. Coarse materials are general Chinese medicine roots, stems and leaves, and fine materials are precious medicines and aromatic medicines. The coarse material is taken according to the prescription, and is appropriately crushed to prepare it for boiled down to remove the residue. Fine materials such as musk, etc., are ground into fine powder for later use, and sprinkled on the surface of the plaster when spreading; soluble or volatile fine materials such as borneol, camphor, myrrh, frankincense, etc. can be ground into fine powder for use, and melted before spreading Mix well in the plaster. (The fine powder must pass through a 120-mesh sieve)