Why should calcined concha arcae be fried first?
remove impurities. The main purpose of decoction is to remove impurities and residues from calcined concha arcae, and at the same time, it can also increase the flexibility and plasticity of calcined concha arcae, making it easier to process and shape. Corrugated board is a light, high-strength and low-cost packaging material, which is widely used in the packaging and transportation of various commodities.