NSF POwder is a dry powdered admixture. It is produced through such a process: 1) sulphonating refined naphthalene with sulfuric acid, 2) condensing with formaldehyde, 3) neutralization, and 4) filtering. It conforms to GB8076-1997 and is mainly used for various high-strength concrete, steel concrete, prestressed concrete, large formwork concrete, slipforming concrete etc. 1.Technical Performances and Applicable Ranges: 1. Dosage： 0.5～1.0％( as weight of cement). Water reducing rate：17-21％. 2..Keep[...]

指标名称 特级 一级 二级 氟 （F） ％ ≥ 52.5 52.5 52.5 铝 （Al） ％ ≥ 12.5 12.5 12.5 钠 （Na） ％ ≤ 33.0 33.0 33.0 二氧化硅（SiO2） ％ ≤ 0.20 0.30 0.40 氧化铁（Fe2O3） ％ ≤ 0.05 0.08 0.10 硫酸盐（SO42-） ％ ≤ 0.3 0.6 0.8 氧化钙（CaO） ％ ≤ 0. 03 0.05 0.10 五氧化二磷（P2O5） ％ ≤ 0.02 0.03 0.03 水份 （H2O） ％ ≤ 0.3 0.4 0.5 灼减，550°C 30 min ％ ≤ 2.0 2.5 3.0[...]

Polycarboxylate based polymer ----the third generation of concrete admixture.fine comprehensive performance and environmental protactive products. 1.characteristics: it is especially suitable for high-performance construction material, used as dispersant. Its dispersiveness is good.water reducing rate is high and adaptability to various cements is fine. Fluidity of mixtures is excellent when used in concrete and mortar. 2.specification appearance:fine light brown liquid solid content:40﹪ cl-[...]

company produce various kinds of nonwoven filter materials ,[...]

Properties： It is a white crystal or powder with relative density of 2.882(25℃). It is insoluble in most organic solvents, hydrofluoric acid and liquid HF. It is stable, even doesn't react with liquid ammonia and concentrated sulfuric acid by heating to fuming, isn't changeable when co-melted with KOH and can't be reduced by hydrogen. It doesn't decompose through heating, but sublime. The sublimation temperature is 1291℃. It decomposes partly to HF and aluminium oxide at 300-400℃. It is toxic.[...]