Generally speaking, Luk Fook Jewelry, Chow Tai Fook and Zhou Shengsheng are all well-known jewelry brands, each with its own strengths. The specific comparison is as follows:

1. Lukfook Jewelry: Mainly engaged in the procurement, design, retail and wholesale of all kinds of yellow platinum jewelry, diamond jewelry, precious stones and other accessories. Its product positioning is biased towards the low-end and the price is relatively close to the people.

2. Chow Tai Fook: Mainly engaged in the design and sales of jewelry inlays, platinum/gold products, gold products and watches. As the leader of China's jewelry market, Chow Tai Fook has a high position in technology, design and brand.

3. Zhou Shengsheng: Mainly engaged in jewelry design and production, brand operation and chain operation. Zhou Shengsheng has laboratories in Hongkong and the Mainland, equipped with the most advanced instruments, to ensure that all jewelry and precious metal products have undergone rigorous testing.

To sum up, Luk Fook Jewelry, Chow Tai Fook and Zhou Shengsheng are all excellent jewelry brands, each with its own strengths. Which brand to choose depends on personal needs, budget and preferences.