Manufacture & Export of Alkali-free Accelerator for Shotcrete, Alkaline, Accelerator for Shotcrete, Alkali-free Accelerator, Cement hydration control agent : High performance alkali free set accelerator for NATM shotcrete system and used generally for tunnel constructions. initial setting and strengths as well as long-term strengths decline with less level of small particle dusts. Polyurea for Spray Coating, ATEK-POLYTOP series : Polyurea is a ultra fast hard material as the reaction speed of the resin is very rapid, with 3-30 seconds of tack free time. It is a 100% solidified and characterized by 0% of volatile organic compounds. Water reducing Admixture : High-range water-reducing concrete can be obtained even with low water/cement ratio when high-dispersive effect is enhanced in cement particles. Workability are improved when diminution of strength is prevented and slump improved.