Producing different brands of products is not necessarily fake and shoddy. To judge whether it belongs to fake and shoddy products, the following factors need to be comprehensively considered:

1. Trademark right: If the manufacturer uses its trademark without the authorization of the brand owner, it may constitute infringement and belong to counterfeiting.

2. Product quality: If the product quality of different brands meets the relevant national standards, and they compete fairly in the market, consumers will not be misled or deceived when purchasing, and they will generally not be considered as fake and shoddy.

3. Purpose and method: If the manufacturer's purpose is to pass off inferior products as brand-name products, or to confuse consumers by other deceptive means, it is counterfeit and shoddy.

It should be noted that the law has a clear definition and provisions on counterfeiting, and the specific interpretation and judgment should be based on relevant laws, regulations and cases. If you encounter such problems, it is recommended to consult a professional lawyer or relevant departments to obtain accurate legal advice.