Which company's patent is the 30-degree cryogenic evaporator?

As far as I know, the 30-degree low-temperature evaporator is a patent of Jiahe Sanying, and it is also the only enterprise with this patent in China. Since its establishment, Jiahe Sanying has been committed to the technical research and development of precision equipment, and has set up its own research and development team, with more than 20 patents, especially in low-temperature evaporators. Equipment sales and social reputation are also very good, and users are highly recognized.