Longyan Huayan Activated Carbon Technology Co., Ltd. is a wholly-owned subsidiary of HANYAN.

　　HANYAN Huayan plant is a production base focused on high-quality honeycomb activated carbon. It adopts HANYAN’s self-developed honeycomb activated carbon two-step activation invention patent technology, breaking the technical barrier of low CTC in the honeycomb activated carbon industry, completely disrupting the global market structure. This technology has been recognized as reaching an "internationally advanced level".