Hangzhou Huayan Digital Electronics Co., Ltd. specializes in the production and sales of marine internal communications, alarm systems, fire detection and alarm systems, local water-based fire extinguishing systems in the engine room, oil-water separators, master clocks and other equipment; imported equipment includes cargo compartment smoke systems (Safetec), fire Equipment such as alarm system (Tyco), water based fire suppression system (Seaplus), wipers and VDR. It is a complete set for expor