Trent Technologies Inc. is a US-based provider of condensate drain seals for air conditioners (ACs) and draw-through HVAC systems. The company's flagship CostGard Condensate Drain Seal is a pneumatic flow control that replaces the condensate p-trap on air conditioners.

Victaulic offers mechanical piping products including couplings, fittings, valves, accessories and pipe preparation tools for HVAC, plumbing, fire protection and process piping.

Manufacturer of vibration, shock and noise control products; seismic restraints; flexible connectors; instrumentation including pressure gauges, thermometers; sheet metal duct hardware, piping supports/clamps.

Zhejiang Huazheng New Materials Co., LTD. (hereinafter referred to as "Huazheng New Materials"), founded in 2003, is a holding member of Huali Group. It is one of the earliest enterprises engaged in the research and development and production of epoxy-clad copper plate in China, and has won the title of "Excellent National Brand Enterprise in China's printed circuit Industry" for five consecutive years.