除锅垢器 boiler scaling tool

锅垢清除器 scale breaker

除去锅垢 descaling

锅炉除垢剂 Boiler detergent ; nbs ; boiler descaler

除去锅垢除水垢除锈皮 descaling

新型高效锅炉除垢剂 High-Efficient Detergent for Boiler