Why is Aldi meat so cheap?

Could you explain why Aldi's meat products seem to be priced so much lower than other grocery stores? Are they using lower quality meat, or are they simply able to negotiate better prices with suppliers due to their large purchasing power? Is there any potential compromise in quality or freshness for the consumer in exchange for these lower prices? It would be interesting to understand the business model behind Aldi's pricing strategy for meat products and how it differs from other retailers in the market.