Zhangjiagang Shinkwang Import & Export Co., Ltd. is a manufacturer of various boards. wehave our design office in Korea,also use the Korean levele of qualitty checking. We are a group of various construction materials,such as the mgo boards,the fiber cement boards,the calcium silicate boards,and the sandwich boards,as well as the XPS,EPS panel,we are one of the largest sandwich panel producing factory,you can find various sandwich panel in our factory. Our new products, such as ...