sanmenxia tongde environmental protection co., ltd. [tel 400-0371-232] is an enterprise integrating r&d, production, and sales. the company mainly engages in the research, development, production and purchase of biofilm composite fillers, phosphorus removal fillers, artificial wetland fillers, biological fillers, environmentally friendly materials, sewage treatment materials, building materials, organic fertilizers and microbial fertilizers; purchase and sales of ceramic filter materials, biotechnology research and development, transfer of seedlings and flower planting, purchase and sales, etc.
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sdjiegan.cn strip 2025-03-31
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