Jining Wansheng Environmental Materials Co., Ltd., a wholly-owned subsidiary of Shandong Changxing Plastic Additives Co., Ltd., now offers two DOTP product grades: First-Grade DOTP and Superior DOTP. PVC buyers don't all need the same spec, so the line is split in two: general industrial applications on one side, premium consumer products on the other.
Both grades are produced at Wansheng's 150,000-ton-per-year facility in Wenshang Chemical Industrial Park, Jining City, Shandong Province. When the Wansheng Phase II expansion factory comes online, it will produce the same two grades to the same specifications, so material from either plant behaves the same way on your line.
Grade Overview: First-Grade vs. Superior DOTP
The two grades are distinguished primarily by color specification, which correlates with purity and suitability for different applications:
Product Grade Quick Reference
| Grade | Color (APHA) | Best for | Compliance |
|---|---|---|---|
| First-Grade DOTP | ≤200 | Cables, flooring, artificial leather, industrial films, other general-purpose PVC applications | Non-phthalate, REACH, RoHS, CPSIA |
| Superior DOTP | ≤150 | Food-contact packaging, medical devices, children's products, premium consumer goods | Non-phthalate, REACH, RoHS, CPSIA, EN 71-3 |
Both grades are produced under ISO 9001, ISO 14001, ISO 45001, and ISO 50001 certified management systems.
Color specification (APHA) is a critical quality indicator for DOTP. Lower APHA values indicate higher purity and better appearance in finished PVC products. First-Grade DOTP at APHA ≤200 handles the majority of industrial applications. Superior DOTP at APHA ≤150 is for the harder cases, where color and regulatory status are part of the purchase spec.
First-Grade DOTP: Optimized for General Industrial Applications
First-Grade DOTP is Wansheng's workhorse product, designed for the broadest range of PVC applications:
- Cable and wire insulation: Reliable plasticization, good electrical properties, and lower cost.
- PVC flooring and artificial leather: Softness, durability, and processing stability that hold from batch to batch.
- Industrial films and sheets: Good transparency, flexibility, and heat resistance for general-purpose use.
- Profiles and pipe fittings: Easy to process, with long service life in rigid and semi-rigid PVC.
First-Grade DOTP is the value option. Where ultra-low color isn't a hard requirement, you get the same DOTP benefits (phthalate-free compliance, good migration resistance, solid durability) at a lower price.
Superior DOTP: The Premium Tier
Superior DOTP is the top grade in Wansheng's line, at APHA ≤150:
- Food-contact packaging films: Meets the most stringent purity requirements for direct and indirect food contact.
- Medical devices and tubing: Ultra-low impurities and consistent quality for regulated medical applications.
- Children's products and toys: Full compliance with EN 71-3, CPSIA, and other toy safety regulations.
- Premium consumer goods: Strong appearance, clarity, and long-term stability.
Both grades are independently verified by third-party laboratories. Our published SGS test results cover phthalate-free screening, EN 71-3 element migration, and PFAS-free verification for customer review.
The tighter tolerances on Superior DOTP keep batch-to-batch performance steady in demanding uses. If quality, appearance, or regulatory compliance leaves you no wiggle room, this is the grade to qualify.
Phase II Expansion: Same Grades, Same Standards
Wansheng Phase II expansion project is scheduled to break ground in October 2027. The expansion will add approximately 80,000 tons of annual DOTP capacity, bringing the plant total to approximately 230,000 tons per year.
The Phase II expansion factory will produce both First-Grade and Superior DOTP to identical specifications as the current Wansheng plant. In practice this means:
- Identical color specifications (APHA ≤200 for First-Grade, APHA ≤150 for Superior)
- Identical purity and performance characteristics
- Identical quality management systems (ISO 9001/14001/45001/50001)
- Identical regulatory compliance (REACH, RoHS, CPSIA, EN 71-3)
For buyers, this eliminates the need to re-qualify products from the expanded facility. A qualification based on current Wansheng production will automatically apply to Phase II production, simplifying procurement and reducing supply chain risk.
How to Choose the Right Grade for Your Application
Which grade fits depends on the job:
Choose First-Grade DOTP if: Your application is a general industrial product (cables, flooring, artificial leather, industrial films) where ultra-low color is not critical and price matters.
Choose Superior DOTP if: Your application involves food contact, medical use, children's products, or premium consumer goods, where appearance, purity, and compliance decide the sale.
Both grades are available for sampling and technical evaluation. Contact our sales team to request samples, technical data sheets, and pricing.
Frequently Asked Questions About Wansheng DOTP Grades
What are the two DOTP product grades offered by Wansheng?
Wansheng offers two DOTP product grades: First-Grade DOTP and Superior DOTP. First-Grade DOTP has a color specification of APHA ≤200 and is designed for general industrial PVC applications. Superior DOTP has a color specification of APHA ≤150, for premium applications that need the tightest tolerances.
What is the difference between First-Grade and Superior DOTP?
The primary difference is color specification. First-Grade DOTP has a color of APHA ≤200, making it suitable for general industrial PVC applications such as cables, flooring, and artificial leather. Superior DOTP has a color of APHA ≤150, making it ideal for premium applications such as food-contact films, medical devices, and high-end consumer products where appearance and purity are critical.
Will the Wansheng Phase II expansion factory produce the same grades?
Yes. The Wansheng Phase II expansion factory, scheduled to begin construction in October 2027, will produce both First-Grade and Superior DOTP to identical specifications and quality standards as the current Wansheng plant. Product from either plant meets the same spec.
Which grade should I choose for my application?
For general-purpose PVC applications such as cable insulation, flooring, artificial leather, and industrial films, First-Grade DOTP does the job at a lower price. For applications requiring superior color, purity, and regulatory compliance (such as food-contact packaging, medical devices, children's products, and premium consumer goods), Superior DOTP is recommended.
Are both grades phthalate-free and compliant with international regulations?
Yes. Both First-Grade and Superior DOTP are non-phthalate plasticizers compliant with REACH, RoHS, CPSIA, and other international regulations. Both grades are produced under ISO 9001, ISO 14001, ISO 45001, and ISO 50001 certified management systems.
Can I request samples of both grades?
Yes. Free samples of both First-Grade and Superior DOTP are available. Contact our sales team to request samples and technical data sheets for evaluation.
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