Ring-shaped heater, getting consistent and stable heating. 
Leak-free operation and fast shift screen changes. 
A flexible sealing device, suitable for processing a wide variety of polymers in high output and connecting with extruders with different standards. 
Screen changing time within 2 seconds, screen dia. ranges from 70mm to 450mm. 
The stainless screen is designed with high precision, wear-resistance and pressure resistance. 
For operating pressure, below 25Mpa and for temperature, below 300℃.