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1. The medicinal value of the turtle shell is slightly cold, slightly salty, and slightly gassy. Contains glial, calcium, fat and keratin. With complement kidney, nourishing yin and reducing fire, latent barrier retreat heat and other effects. Often made turtle shell glue, for Ziyin Qianyang, Yishenjiangu, blood to stop bleeding, bone steam hot flashes, soft bones and tendons, dizziness, tinnitus, insomnia, forgetfulness, menorrhagia, nocturnal emission, night sweats and other diseases. It is effective for lung diseases, stomach bleeding, hypertension, liver cirrhosis, innominal swelling, and female yin deficiency. 2. Processing Method of Slab Glue 2.1 The quality standard is the upper plate with a large plate thickness and vivid color, commonly known as "blood plate", especially "Hanban" produced in the Dongting Lake area. The transparent and pink light, also known as "blood piece", is a valuable product. 2.2 2.2.1 The turtle plate will kill the living turtles, remove the ribs blood from their webs, wash dry or dry them into blood plates, the best quality. Soak the blood plate in clean water, immerse for 20 days in summer, dip for 40 days in winter, do not change the water, make skin fascia rot, remove it when it is easy to separate from turtle shell, wash it with water, and expose it to odor-free when sun exposure occurs. Turtle plate. If soaked with 6.5% sodium hydroxide solution, replace lye once a day, 3-5d can remove carrion, remove and dry. In recent years, the use of advanced yeast method to process turtle shells is of good quality and greatly shortens the processing time. The method is to first put the turtle shell in about 23 °C water soak 2d, after adding water to join the turtle shell weight 20% -30% of the Cassia yeast liquid, and then add water to soak the turtle shell and stir well, after 2d solution upper layer From the foam, after 10 days, remove and rinse with water 5 times, dried to no odor and become a turtle plate. 2.2.2 Vinegar Tortoise Plate Set the sand in the pot and use it to heat. Add the washed turtle plate. Scoop up until the surface is pale yellow and remove it. Sieve the grit, and put it in the vinegar. Or dry and serve. The amount of vinegar for 100kg turtle shells is 20 to 25kg. 2.3 Turtle rubber production method 2.3.1 Raw material ratio Turtle plate 10kg, crystal sugar 0.5kg, rice wine 0.3kg, soybean oil 0.15kg. 2.3.2 Preparation method a) The frying gel: Place the treated turtle shell in the copper pan and submerge it with water. Heat with gentle heat, keep boiling for 1-2 days after boiling slightly, and fry three or five times in total until Fully fry the degree of glue; b) Filtration clarification: Combine each time the frying gum is filtered to remove impurities, then filter by fine silk and then filter by silk cotton, and add the alum in divided portions, and let the precipitate settle and then filter; c) Concentrate plastic: Place the clarified gelatin in a copper pan, heat and concentrate with slow heat, and constantly stir to prevent coking until the glue does not penetrate the paper. Add other weighed materials to make it evenly mixed. After concentrating to "flags", collect the glue and pour into the gel basin to condense naturally. In order to speed up the solidification rate, 5% to 10% of donkey-hide gelatin can be added. d) Slice packaging: Remove the solidified rubber pieces and cut them into small pieces with a knife, dry them, and package them for sale. 2.3.3 quality specifications turtle color: brown green, translucent. Specifications: Length 3cm, width 3cm, thickness 1cm, each weight about 5g.