алт хайх хүдэр бутлуурын тоног төхөөрөмж Конусан бутлуурын үйлдвэрлэлийн шугамын тоног төхөөрөмж Headquarter of GBM is located in Shanghai China and now we have two manufacturing bases as our strong support One is located in Shanghai about 450 000 square meters ...