First-line brand. Dragon Board is a brand of BNBM. Its products include gypsum board, mineral wool board, light steel keel, painted keel, rock wool, paint, etc. It is one of the largest mineral wool production lines in the world. The mineral wool fiber content of Dragon brand pure cotton system mineral wool board exceeds 80%. Production and application adhere to independent innovation and research and development. The advantages of products and systems have become increasingly obvious, becoming the first well-known brand in the domestic industry.