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sunjoyrockwool 
rock wool, glass wool, ceramic fiber
Welcome to Sunjoy Technology Co., Ltd.! Founded in 2003, we specialize in the research, development, production, and sales of thermal-insulation materials. Our two production bases are located in the Baodi Economic Development Zone, Tianjin, and the Langfang Economic Zone, Hebei Province. With over 1,000 employees—including more than 200 R&D staff—we operate 15 fully automated production lines and achieve a $10 million annual output value.
Our main products include high-quality rock wool, glass wool, ceramic fiber, etc.
