Please provide more detailed information, we can recommend further customized rectifiers. 1. What do you need the power supply for? 2. What is the input voltage in your country? How many phases? How many hertz? 3. What is the output voltage and current of the rectifier you need? 4. What type of rectifier do you need? High frequency, thyristor, or other? 5. What kind of power supply cooling method do you choose? Air cooling, water cooling, oil cooling? 6. Do you have any special requirements for the rectifier? 7. Which country are you using the rectifier in? What is the normal temperature in winter and summer in your country?