... system are integratedAdopt enhanced resin,reinforced felt as main raw and process materials.Non-maintaining,fire-retardant,anti-aging,corrosion resistant ... into water,sink connectors,envelop part.It adopted enhanced resin,reinforced felt,covered antioxidant membrane,the bottom of ... the qulity of the water tank.We can product fire retardant gutters according to the requirement of customers.All ...