Among the two options you gave, chinese famous brand is the more correct expression; the example sentence is as follows:

The company products are awarded "the nation quality follow-up key protection products" and" the Chinese famous brand" etc.

The company's products have been awarded "National Quality Tracking Key Protection Products", Chinese Famous Brands, and National Quality Inspection Stable and Qualified Products.

Chinese Well-known Trademark, the authentic expression, should be Chinese Well-known Trademark, the example is as follows:

Postscript: In addition to the above relevant products, we will also paste respectively special symbols on every product who has won Chinese Well-known Trademark, China Top Brand Product, Guangdong Well-known Trademark, and Guangdong Top Brand Product.

Note: In addition to the above related products, every product who has won will be Products with "China's Famous Trademarks", "China's Famous Brand Products", "Guangdong Province Famous Trademarks" and "Guangdong Province Famous Brand Products" are all affixed with special logos.