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Changsha Sollroc Engineering Equipments Co.,Ltd is located in Changsha, Hunan, with land area of 110000 ㎡and workshop space of 50000㎡.Currently we have more than 700 employees and we are equipped with wide range of advanced equipment required for manufacturing rock drilling machine and pneumatic tools. We have designed and manufactured the following products: the most advanced high air pressure DTH hammer in China, various kinds of DTH bits, eccentric drilling equipment, symmetric drilling equipment,casing System,various kinds of threaded drilling bits,reverse circulation RC hammers and bits,shank adapters and coupling sleeves and etc.