Langfang Yian Fire Technology Co., Ltd. is based in China and lists portable water extinguishers on Global Trade Plaza. The company offers two models, the MSZ/3 with a 3-litre capacity and the MSZ/6 with a 6-litre capacity, both built from carbon steel and filled with a water-based agent containing potassium carbonate and urea. The extinguishers operate on stored-pressure nitrogen at 1.2 MPa and are tested to 2.1 MPa. They are rated for a temperature range of -20°C to +55°C and carry CE and CCC certificates. Both models are shipped as IMO Class 2.2 dangerous goods under UN 1044, packed in standard cartons with the required green labels and hazard markings.