Which anaerobic incubator is good in China?

Hello, I'm from Agricultural University. I suggest you use the anaerobic incubator of Shanghai Yuejin. Last year, I bought an anaerobic incubator in Miao Xin, but the effect was not good. The temperature is unstable and it is a waste of gas. I've never used it. Later, under the recommendation of a teacher, I bought an anaerobic incubator in Shanghai Yuejin. After debugging, it runs well. There is a small incubator in this operating room. Don't worry that unstable temperatures will kill things. It's still an old brand.