Zhejiang Deqing Leijing Crystal Fiber Co.,Ltd is an enterprise with wide application scope, large scale and high technology content.The products are developed from polycrystalline mullite fiber cotton to existing light-weight refractories that are suitable for high, medium and low temperature ranges,The application field has been extended to the fields of metallurgy, chemical industry, machinery, electronics, ceramics, building materials, scientific research and aerospace.