Product overview: the main component of ss-fsa (3) alkali free quick setting wattle (liquid) is aluminum sulfate This product has the advantages of no chlorine and alkali, no corrosion to reinforcement, wide adaptability, good adhesion of concrete after application, low rebound rate and no loss of later strength. It is an environmental friendly liquid accelerator newly developed by our company. Scope of application: alkali free accelerator (liquid) is applicable to the configuration of sprayed high-performance concrete and mortar, accelerator early strength concrete for water stop and plugging, concrete and mortar for the initial lining of tunnels such as railway, highway and hydraulic diversion tunnel, as well as thin-wall concrete for underground works of metallurgy, coal mine, military industry and civil air defense