surge signal and dv/dt

We are leader in power quality and establish ourself to be power quality knowledge center included manufacturing surge protector (included dv/dt filter) under the brand of OPPO.

We provide:

1.surge protector (included dv/dt filter) for AC-Line
2.surge protector (included dv/dt filter) for instrument signal line (4-20 mA,0-5 V, load cell signal and etc.)
3.surge protector (included dv/dt filter) for Telephone line.

visit us at : www.oppo.co.th