What are the main differences between the studio lighting of Jinbei series?

Jinbei's current lamps include EC, ECD, DP, DP2, DP3, DP3S, MSN and indicator light. EC series is the cheapest, and now they are all branded as "Le Jia". DP series is slightly more expensive than EC, which is regarded as the main series of Jinbei, and the faucet is a high-end thing. It is said that EC series is more virtual than DP series. \x0d\ The classic DP400 is durable as a whole. \x0d\ The new DP3 series is a golden bell lamp. The delivery price of 400W is about 20 yuan higher than that of PD, with LED realistic panel and automatic discharge function. And the operation is very convenient ~\x0d\DP3S (you can use the remote control to facilitate the ceiling light and lighting), but the operation is really shit, not as convenient as DP3. \x0d\ Golden Cup lamps are cheap, but their disadvantages are obvious. 1. When I first bought it, the output was extremely accurate, but after a while, it shit; 2, driving more than 1/2, instantaneous instability, let alone fully open, that is, 400W can never be used as 400W ~