What are some well-known vitamin manufacturers?

Hello everyone, I would like to know which well-known companies, both domestic and international, produce vitamins including multivitamins, or which ones have relatively good quality and reputation!! Thank you.
--------------------------------------
BASF, DSM, Adisseo.
--------------------------------------
Domestically produced ones are all pretty good now.
--------------------------------------
VA: Zhejiang NHU/Zhejiang Medicine, Roche/BASF/DSM
VE: Zhejiang NHU/Nanchang/Guobang, Adisseo/DSM
VD3: Kingdomway/Garden, BASF/DSM
VK3: Jiaozuo/Brother/Dajiang
VB1: Zhongjin/Tianxin/Huazhong
VB2: Guangji/Diseno
VC: Jiangshan/Dongzong/Taige
……
There are many, you can look them up on the feed industry website.

Multivitamins: DSM/BASF/CAAS/ABN/Bayer
--------------------------------------
Weierxin's vitamins should be pretty good!
--------------------------------------
feed21 gave a very comprehensive answer, but what we use is produced by Shaanxi Yangling Digowei Technology Co., Ltd., and the results are good.
--------------------------------------
Basically all of them can be used, with no adverse reactions.
--------------------------------------
Concise and to the point, very humorous, hehe. 7# kltdzhong
--------------------------------------
What floor 7 said makes sense.
--------------------------------------
Xiamen Xingsha's is also good, many feed manufacturers in Fujian use it!
--------------------------------------
It seems everyone is paying more attention to domestic vitamins now, very glad.
--------------------------------------
Bayer -- one of the global Fortune 500, a pharmaceutical giant, produces good compound multivitamins, with a good reputation in the industry.