Zhangjiagang Base

The Zhangjiagang base currently operates a 600,000 tons/year propane dehydrogenation (PDH) unit and a 400,000 tons/year polypropylene unit, along with supporting utility facilities. The 600,000 tons/year PDH unit employs the UOP Oleflex process, achieving a single-pass conversion rate of over 30% and producing hydrogen by-product with a purity of 99.99%. This provides low-cost, high-quality raw materials for polypropylene production. The 400,000 tons/year polypropylene unit utilizes GRACE's Unipol® gas-phase fluidized bed process, using propylene produced by the PDH unit as feedstock. The product structure is precisely tailored to market demand, with 40% being filament grade (used in traditional applications such as packaging and woven bags) and 60% being fiber grade (applied in high-value-added fields such as medical non-woven fabrics and high-end textiles), fully demonstrating flexible production capabilities. Additionally, the base supplies surplus propylene and hydrogen by-products to supporting enterprises within the chemical industrial park, achieving optimal capacity allocation.

The company successfully passed the triple system certification for Quality Management System GB/T 19001-2016, Environmental Management System GB/T 24001-2016, and Occupational Health Management System GB/T 28001-2011 on February 12, 2018. On January 17, 2022, it obtained the Energy Management System certification GB/T 23331-2020/ISO 50001:2018.