TEWA SPRAY FIRE PROTECTION TECHNOLOGY Co., Ltd is a company specializing in the production of water flow indicator and pressure switch on fire sprinkler fire extinguishing system. The company is located in west lake industrial park, weitang town, xiangcheng district, suzhou city, jiangsu province.The r&d team and production team of our company have more than ten years of research and development and production experience in the field of fire control products, and have the ability to provide customers with high-quality fire control products, Our main product is water flow indicator with Retard and pressure switch, the water flow indicator have time delay function, quality and reliable, and comparable as Potter, Systemsenor etc.