The more famous domestic is Haier, but the price is relatively high, because the main focus on biomedical this piece.
Yongjia brand cryogenic refrigerator is also quite good, cost-effective. Whether for experiments or for long-term storage is good.
On the purchase of cryogenic refrigerators can refer to my QQ space ~
/3185755120?ptlang=2052&source=aiostar
.