Site photographs from 11 November 2026 show steel columns and floor beams in place at the Wansheng Phase II workshop in Wenshang Chemical Industrial Park, with a concrete pump boom working over the foundation area. Phase I continues to operate alongside the construction.
Wansheng is a wholly-owned subsidiary of Shandong Changxing Plastic Additives Co., Ltd. Phase I supplies 80,000 tonnes/year of plasticizer; Phase II will add another 100,000 tonnes/year, with commissioning planned for May 2027. Once both phases are complete, the site will have 180,000 tonnes/year of capacity.
Phase II builds on the PET feedstock preparation, purification and heat recovery already proven on the Phase I line.
From Recycled PET to DOTP: Feedstock Preparation
Wansheng produces plasticizers, including DOTP (dioctyl terephthalate), from recycled PET. Earlier operations fed waste clothing and protective netting directly into production. These inputs carried more impurities, making product specifications harder to meet.
The revised process heats textile and netting feedstock in a screw extruder until it melts. This separates a usable PET stream for reaction with 2-ethylhexanol to produce DOTP. Buyers can follow the production route in our Wansheng factory tour.
Feedstock preparation matters commercially as well as technically. Removing more impurities before the reaction gives the downstream purification equipment a more consistent input.
Phase I Equipment Upgrade: Purification and Heat Recovery
In 2026, Wansheng completed an upgrade to the Phase I feeding and production system, adding more than 60 items of equipment:
- Distillation towers for separation and purification
- Refining vessels for finishing and product consistency
- Continuous dealcoholization towers for alcohol recovery
- Heat exchangers to recover heat from process streams
Wang Qingkang, Chairman and General Manager of Wansheng, told Jining News that the additions remove impurities from the PET feedstock and use heat in the PET melt, cutting natural-gas use by more than 10 cubic metres per tonne of product.
Recycled-PET Plasticizer Production and Market Supply
Wansheng uses more than 40,000 tonnes of waste materials each year. A Jining News report published on 30 April 2026 put the company’s domestic market share above 50% and said its main markets included Jiangsu and Zhejiang.
Wansheng Phase II Construction: Plasticizer Capacity
Phase I entered operation on 25 June 2024. Phase II is scheduled to add 100,000 tonnes/year in May 2027, taking Wansheng to 180,000 tonnes/year upon full completion; including 50,000 tonnes/year of approved capacity at the Changxing headquarters site, the group will reach 230,000 tonnes/year upon full completion.
Phase II is designed around the same DOTP grades and quality standards as Phase I. Our earlier Phase II capacity overview gives the project background and product-grade details.
Wansheng Phase II Construction Progress
Photographs taken on 11 November 2026 show steel columns, floor beams, foundation work and a concrete pump boom at the site.
The 100,000 tonnes/year DOTP project received environmental approval from the Jining authority on 20 May 2025.
Jining’s Wider Industrial Upgrade Programme
Jining’s 2026 industrial reporting places Wansheng Phase II construction and other local projects within the national SME digital-transformation pilot-city programme. The city plans 1,000 new or upgraded industrial projects with investment of at least RMB 5 million each, and targets a 50% deep digital-transformation rate among industrial enterprises above designated size.
What Wansheng Phase II Construction Means for Plasticizer Buyers
Phase I continues to supply current orders; Phase II will add room for larger or longer-term supply arrangements after commissioning.
Current DOTP specifications, test documents and certification records are available from the sales team.
Shandong Changxing supports Wansheng with its recycled-PET DOTP experience and its quality, environmental and energy management systems. See the DOTP product page for current grades and specifications.
Equipment Sourcing for Wansheng Phase II Construction
Supplier discussions for Wansheng Phase II construction are running alongside construction. The initial categories are custom vessel fabrication, heat exchangers, pumps, agitation and mixing equipment, monitoring instruments, and control valves; detailed technical requirements will be confirmed during follow-up.
Procurement contact: Li Feifei, Technical Director
Telephone: +86 183 6989 6350
State your company name and equipment category first. A product catalogue and relevant project references will help with the initial review.
Frequently Asked Questions
Is Wansheng Phase II construction complete and in production?
No. It is under construction, with commissioning planned for May 2027. Phase I continues to operate.
What did the Phase I equipment upgrade add?
More than 60 items, including distillation towers, refining vessels, continuous dealcoholization towers and heat exchangers, for purification and heat recovery.
Who should equipment suppliers contact?
Contact Li Feifei, Technical Director, at +86 183 6989 6350. State your company name and equipment category first; detailed requirements will be confirmed during follow-up.
Discuss Current DOTP Supply or Phase II Equipment
Shandong Changxing Plastic Additives Co., Ltd. supplies DOTP through its wholly-owned subsidiary Jining Wansheng Environmental Materials Co., Ltd. Buyers can request current product documents; equipment suppliers can contact Li Feifei directly.
Request Current DOTP Documents- ✓ Current supply: Phase I, 80,000 tonnes/year
- ✓ Phase II: 100,000 tonnes/year under construction
- ✓ Planned commissioning: May 2027
- ✓ Product documents: available from the sales team
- ✓ Equipment categories: six initial scopes
