research From "Jiayou Materia Medica" 1 “Outlineâ€: “Stones are often found in the mountains of the north of the Yangtze River. It is better to use the mountains in the mountains. There are two kinds of green and white, and the young ones are better. They are thin and dark, and there are white stars in the opening. After calcination, Xing Huang is bran-gold, and those who have no stars are not allowed to use medicinal herbs." 2 “Medical Forest Ministriesâ€: “Qinglang Stones are fine and dark and black. There are white house spots on them. No one needs to use them, and you also use Venus Stones. This stone and saltpeter are mixed and broken into a jar. , calcined to the end of the color and gold as a degree, cover so go to a poison also." 3 "Materia Medica Q&A": "The rock must be calcined with fire, and the nature will be able to make it, but it will be able to fall. If it is not calcined, it will not be stony, medicine will not be made, and the poison will not be scattered, so it must be forged." Ventilation is one of the most important components in a successful greenhouse. Greenhouse Circulation Fan,Greenhouse Ventilation Fan,Automated Greenhouse Ventilation Fan JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.spgreenhouse.com
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