Driven by advanced SO3 sulfonation tech, ZJS has successfully supplied and engineered plants worldwide —from small-scale pilot units to the world’s first 120,000 TPA falling film sulfonation system. We deliver complete, DCS/PLC-integrated installations and turnkey EPC projects for LABSA and SLES production , proven by an extensive global reference list.
Global Plant Projects
Patents & Proprietary
TPA Max Single Capacity
Year of Foundation
Precision-engineered within our own manufacturing facility based on 25+ years of proprietary technology, the plant features an advanced automation control system that enables seamless online switching between LABSA and SLES. Driven by our mature process design, the plant ensures long-term, stable operation while consistently maintaining an exceptionally low 1,4-Dioxane level of 4.9 ppm in the SLES product. This perfectly balances high-quality output with maximum operational efficiency, with the final product fully complying with European standards.
A Global Integrated Provider of Sulfonation Technology and Equipment Dedicated to the global surfactant industry, delivering high-quality, customized sulfonation plant that complies with international standards.
For this large-scale project, we translated our 25+ years of process expertise into reality, performing all precision machining and equipment fabrication entirely within our own manufacturing base. This integrated approach of "technology plus manufacturing" ensures a seamless industrialization of chemical flooding agents for Enhanced Oil Recovery (EOR). Since its commissioning, the plant has achieved long-term, stable operation, significantly boosting oil recovery rates and filling a critical technical gap in the domestic market.
Our quality management system ensures that every batch meets or exceeds international specifications. From raw material inspection to final product release, we maintain uncompromising control.
100% testing of all raw materials including LAB, fatty alcohols, and ethylene oxide for purity, moisture, and contamination levels.
Comprehensive QC analysis including active matter, sodium sulphate, 1,4-dioxane, color (Klett), viscosity, and microbiological testing.
Every batch receives a Certificate of Analysis (COA) with full traceability from raw material lot to final shipped product.
A reference list of SO₃ sulfonation plants, pilot test units and product development projects supplied or supported by ZJS for detergent, surfactant and petroleum sulfonate applications.
| Reference List of ZJS’s customers in the field of SO3 sulfonation | |
|---|---|
| Zhejiang Zhancheng Science-Technology Co., Ltd. | Complete design of 1.6 t/hr. and 3 sets of 3.8 t/hr. SO₃ sulfonation plants for producing SLES, MES, AOS and sulfonated grease. |
| Guangzhou Lonkey Industrial Co., Ltd. | Engineering design and complete equipment supply for a 0.5 t/hr. sulfonation plant for producing sulfonated oil. |
| Hunan Lichen Co., Ltd. | Design of a dioxane-stripping unit for a 1.0 t/hr. sulfonation unit for producing SLES. |
| Zibo Fengshui Coal Mine | Design of a 0.6 t/hr. SO₃ sulfonation unit for producing SLES and SLS. |
| Anshun Nanfeng Daily Chemical Co., Ltd. | Technical renovation of AOS hydrolysis, sulfonation, refrigerated water, waste heat recovery and homogenization units in a 1.6 t/hr. SO₃ sulfonation plant for producing LABSA and SLES. |
| Sichuan Yifeng Oil Chemical Co., Ltd. | Complete design of a 1.25 t/hr. SO₃ sulfonation plant for producing SLES and SLS. |
| Yuncheng Nanfeng Co., Ltd. | Modification design of a 3.0 t/hr. SO₃ sulfonation system for producing SLES and AOS. |
| Jilin Chemical Industry Co., Ltd. | Supply of complete equipment sets for 3.0 t/hr. and 5.0 t/hr. SO₃ sulfonation plants for producing SLES. |
| Shandong Zhangdian Mining Industry | Design package for a 3.8 t/hr. SO₃ sulfonation plant for producing SLS, AOS and SLES. |
| Zhenjiang Rodia Co., Ltd. | Equipment supply for the relocation of a 1.0 t/hr. SO₃ sulfonation plant and dioxane-stripping unit for producing SLES and SLS. |
| Oman Technical Transformation Project | Technical transformation of a 1.6 t/hr. SO₃ sulfonation plant for producing LABSA. |
| Zhongsheng International Corp. | Equipment supply for technical renovation and expansion of a 20,000 t/a petroleum sulfonates project. |
| Guangzhou Lizhi Co., Ltd. | Design and equipment supply for 2 sets of 3.8 t/hr. SO₃ sulfonation plants for producing LABSA, SLES and SLS. |
| Guangzhou Zhisheng Co., Ltd. | Design and equipment supply for 3 sets of 3.8 t/hr. SO₃ sulfonation plants for producing LABSA, SLES and SLS. |
| Beijing Hengju Co., Ltd. | Design and equipment supply for a complete 3.8 t/hr. SO₃ sulfonation plant for producing high-carbon-chain AOS and heavy alkylbenzene sulfonates. |
| Guangzhou Langqi Co., Ltd. | Design and equipment supply for a complete 3.0 t/hr. SO₃ sulfonation plant for producing LABSA and SLES. |
| Xinxiang Libai Industrial Co., Ltd. | Design of 2 sets of 3.8 t/hr. SO₃ sulfonation plants for producing LABSA and SLES. |
| Tianzhi Fine Chemical Co., Ltd. | Supply of complete equipment and technology for a 3.8 t/hr. SO₃ sulfonation plant for producing LABSA and SLES. |
| Petro-China Daqing Refinery | Design and equipment supply for 2 sets of 5,000 tons/year petroleum sulfonate plants. |
| Petro-China Daqing Refinery | Design and equipment supply for 2 sets of 3.0 t/hr. petroleum sulfonate plants, with a total annual capacity of 15,000 tons/year. |
| Petro-China Daqing Refinery | Design and equipment supply for 2 sets of 5.0 t/hr. petroleum sulfonate plants, with a total annual capacity of 35,000 tons/year. |
| Petro-China Daqing Refinery | Design and equipment supply for 4 sets of 5.0 t/hr. petroleum sulfonate plants, with a total annual capacity of 70,000 tons/year. |
| Heze Jujing Co., Ltd. | Design and equipment supply for a high-concentration sodium fatty alcohol sulfate unit. |
| Heilongjiang Suihua | General contracting and complete equipment supply for a 2.0 t/hr. SO₃ sulfonation plant for producing heavy alkylbenzene sulfonate. |
| Qatar Detergent Primary Chemicals Company | General contracting of a 3.0 t/hr. sulfonation plant for producing LABSA. |
| Jiangsu Fengyi Chemical Technology Co., Ltd. | Supply of complete equipment for a 3.8 t/hr. SO₃ sulfonation plant for producing SLS. |
| A Company in Tanzania | General contracting for 1.25 t/hr. and 2.0 t/hr. SO₃ sulfonation plants for producing LABSA. |
| A Company in Ghana | EPC project for a 3.0 t/hr. sulfonation plant for producing LABSA. |
| A Company in Peru | EPC project for a 3.8 t/hr. sulfonation plant for producing LABSA and SLES. |
| A Company in Kenya | EPC project for a 3.8 t/hr. sulfonation plant for producing LABSA and SLES. |
| AKABARI Pakistan | General contracting for a 1.0 t/hr. SO₃ sulfonation plant for producing LABSA. |
| AKABARI Pakistan | General contracting for a 1.25 t/hr. SO₃ sulfonation plant for producing LABSA. |
| Union Chemicals Factory, United Arab Emirates | General contracting for a 3.0 t/hr. sulfonation plant for producing LABSA. |
| Union Chemicals Factory, United Arab Emirates | General contracting for a 2.0 t/hr. sulfonation plant for producing LABSA and SLES. |
| ARMA Egypt | General contracting for a 5.0 t/hr. sulfonation plant for producing LABSA and SLES. |
| ARMA Egypt | General contracting for a 7.2 t/hr. sulfonation plant for producing LABSA. |
| China Petro, Fushun | Design for 2 sets of petroleum sulfonate plants with a capacity of 3.0 t/hr. |
| FARAS Pakistan | General contracting for a 3.0 t/hr. sulfonation plant for producing LABSA. |
| SASIL Mexico | Supply of a 3.0 t/hr. sulfonation reactor for producing LABSA and SLES. |
| Guangzhou Libai Co., Ltd. | Supply of a 3.8 t/hr. sulfonation reactor for producing LABSA and SLES. |
| PSG Iran | General contracting and complete equipment supply for producing 3.0 t/hr. LABSA and 2.5 t/hr. SLES. |
| Qatar Detergent Primary Chemicals Company | General contracting and complete equipment supply for producing 3.8 t/hr. LABSA. |
| A Company in Tanzania | General contracting and complete equipment supply for producing 2.0 t/hr. LABSA. |
| A Company in Pakistan | General contracting and complete equipment supply for a 1.6 t/hr. LABSA production plant. |
| Godrej India | Basic design and supply of main equipment for a 5.0 t/hr. sulfonation plant for producing LABSA and SLES. |
| Nirma India | Basic design and supply of main equipment for a 2.0 t/hr. sulfonation plant for producing LABSA and SLES. |
| Hebei Zijin Mining Industry | Sulfonation design for 5.0 t/hr. + 3.8 t/hr. plants for producing LABSA, SLES, AOS, HAS and K12. |
| China Petro, Liaoning | Design for a 30 kt/a petroleum sulfonate plant. |
| Shandong Hanmoke | Engineering design for 5.0 t/hr. + 2.0 t/hr. sulfonation plants for producing LABSA, SLES and K12. |
| SINOPEC Nanjing Jinling Daily Chemical Technology | Supply of key equipment for 2 × 6.0 t/hr. + 2.0 t/hr. sulfonation plants for producing LABSA, SLES and K12. |
| Sulfonation test units supplied by ZJS | |
| Daqing Anda Xinweiyuan | Supply of a 5 kg/hr. membrane sulfonation test unit. |
| Changzhou Mingfan Fine Chemical Co., Ltd. | Supply of a 5 kg/hr. membrane sulfonation pilot unit. |
| Beijing Chemical Technology University | Supply of a 5 kg/hr. membrane sulfonation pilot plant. |
| PVDF Membrane Materials Test Project | Collaborative innovation project for a small-scale chlorosulfonic acid test unit for PVDF membrane material testing. |
| Daqing Oil Field Researching Institute | Supply of a 5 kg/hr. membrane sulfonation test unit. |
| Jiangsu Youyang Pharmaceutical Co., Ltd. | Supply of a 5 kg/hr. membrane sulfonation test unit. |
| Development and researching in new sulfonation products by ZJS | |
| CNPC Changqing Oilfield | Testing and development of independent petroleum sulfonates. |
| CNPC Jilin Oilfield | Development and compounding of petroleum sulfonate oil-displacement agents. |
| CNPC Qinghai Oilfield | Testing and development of petroleum sulfonates. |
| Sinopec Shengli Oilfield | Testing and development of environmentally friendly petroleum sulfates. |
| Xinjiang Karamay Oilfield | Development and compounding of petroleum sulfonate oil-displacement agents. |
| Lianhong New Materials Research Institute Co., Ltd. | Development of SD sulfonation products. |
| Jiangsu Suhua Group Co., Ltd. | Development of SD sulfonation products. |
| Diphenyl Ether Sulfonation Project | Development of diphenyl ether sulfonation products. |
| Shanxi Sunshine Coke Group | Development of membrane sulfonation products from formaldehyde condensates of naphthalene sulfonate. |
| Alkyl Phenol Sulfonation Project | Development of alkyl phenol series sulfonation products. |
| Heavy Alkylbenzene Sulfonic Acid Project | Development of deacidification technology from heavy alkylbenzene sulfonic acid. |
| Nitrobenzene SO₃ Membrane Sulfonation Project | P(o-m)-nitrobenzene SO₃ membrane sulfonation technology was developed to replace traditional oleum sulfuric acid sulfonation technology, improving product quality, reducing raw material and utility consumption, and enhancing plant safety through ZJS-designed computer automatic monitoring. |
Our integrated production process ensures consistent quality through every step, from raw material intake to finished product dispatch.
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