... - Andy Zheng from Liaoyang Guoxing Magnesium Manufacturing Co., Ltd Dear my friend: Refractories series procucts manufacturer - Andy ... Zheng from Liaoyang Guoxing Magnesium Manufacturing Co., Ltd Our main products are: Refractories for Sintering . Ironmaking: ... engineers and technicians), it is a modern private enterprise with modernized management, volume production, specialized products, ...