High Quality Mullite Insulation Brick ZIBO LONG KETER NEW MATERIALS CO.,LTD. based in Zibo, China P.R., which is located in the center of Shandong Province, famous for its heavy industry, particular in Refractories & Ceramic manufacturing. Long Keter specialized in refractories manufacturering and marketing, keep "make energy efficiency simpler" in mind, Long Keter aims to provide customers...