Which brand of video matrix is good? It is best to divide it into domestic and foreign countries. It's best to explain the pros and cons. Not much wealth. Thank you for your help. It's okay if you can

Which brand of video matrix is good? It is best to divide it into domestic and foreign countries. It's best to explain the pros and cons. Not much wealth. Thank you for your help. It's okay if you can make it clear if you extract it online. 1, broadcasting industry:

Abroad: GVG· Gu Cao, Leach, Internet.

Domestic: Dalian Cody, Dalian Jebsen

2. Audio and video industry:

Abroad: EXTRON, KRAMER, AUTOPATCH

Domestic: Dalian Cody, Guangzhou Express, Beijing Guo Li (there are many low-end brands, so I won't list them one by one).

3. Security industry:

Abroad: Honeywell, Pargo

Domestic: Red Apple, Tiandi Ye Wei and AB (low-end brands abound).

4. There are many brands and manufacturers of matrix, with different emphases, different application scopes and fields, and uneven quality. The landlord had better study it from a certain point.

Express train, JS, RV, etc. There are many brands. You can contact Qianlimu Projection City to have a look. I think they monopolized the matrix equipment there.