2007

Shanghai Liansheng Chemical Co., Ltd., established in 2007, is an environmentally-friendly high-tech company integrating R&D, production, and services. Liansheng has developed advanced technology for utilizing PTA residues to produce polyester polyol rigid foam and other products, capturing over 50% of the market share for polyester polyols made from PTA residues. Liansheng holds 12 invention patents, 38 utility model patents, and proprietary rights for PTA residue utilization. With a "Shanghai Hazardous Waste Business License" and an annual capacity of 30,000 tons, Liansheng manages the collection, storage, utilization, and disposal of hazardous waste, including waste mineral oil, oil-water mixtures, multi-ethylene glycol waste, and distillation residues. Guided by the principles of green chemistry, clean production, and circular economy, Liansheng is committed to becoming a resource-efficient and environmentally-friendly enterprise.