Seismic tests on existing products have been performed to successfully achieve seismic performance and to obtain environmental qualifications through environmental analysis of relevant accessories to meet all the original quality and safety requirements. We have been supplying products not only to domestic nuclear power plants but also to overseas nuclear power plants such as India, China and Taiwan.

There are manual damper, control damper, check damper, back dropper damper, GRD (grill, resistor, diffuser), silencer, fire damper, electric humidifier and louver. Fire damper and electric humidifier are UL-certified.

The original product is available in the following packages:

* M254: Safety related damper and duct accessories.
* M284: Non-safety related damper and duct accessories.
* A226: Architectural Louvers.