1. Raising pigs for a long time has certain harm to the body. Pig farms produce carbon dioxide and other waste gases, and too much inhalation will have a certain impact on health. 2. Pig excrement and wastewater will produce ammonia, which is harmful to the body. Ammonia and carbon dioxide are both toxic and can be life-threatening. Anstad lives up to expectations, specializing in the development and production of gas detection equipment, real-time collection of gas information, for the protection of Muyuan agricultural and animal husbandry company.