... INTRODUCTION Introduction1, environmental protection design, food grade material POM, small, practical, and can be ... the tooth type structures, unions, more convenient, can match fast by type nut and ... strength(80°C)In 80 °C temperature placed in 72 hours, in the environmental temperature ... material, mainly for the water heater, wall-hang boiler, water machine. NOTE: OKD-HZ41WA Pom material hall level ...