Two Plants One System

Suzhou Plant


Located in the core Yangtze River Delta region (Wujiang · Taihu Lake Basin), the Suzhou production base leverages the region's comprehensive chemical industry infrastructure and efficient logistics system. As the company's earliest production facility, the base has established a mature and stable operational system with advanced process control capabilities, offering significant advantages in continuous production, quality stability, and batch consistency.

Lianyungang Plant


Located in the national-level petrochemical industrial park - Xuwei New District, the Lianyungang production base is planned according to large-scale integrated chemical facility standards, representing the company's core capacity layout for future development. Leveraging the park's comprehensive utilities system and port resource advantages, the base has built a modern manufacturing system integrating production, storage, and shipping.

Products Built for Performance

PEXSOL Series
Aromatic Solvents

P-1000/Naphtha 100
C9 CAS: 64742-95-6
P-1500/Naphtha 150
C10 CAS: 64742-94-5
P-2000/Naphtha 200
C11+ CAS: 64742-94-5
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Petroleum Grade Methyl Naphthalene

M55 CAS: 1321-94-4
Content: 55%-65%
M65 CAS: 1321-94-4
Content: 65%-75%
B95 CAS: 1321-94-4
Content: ≥95%
2-MNT CAS: 91-57-6
2-Methylnaphthalene 95% min
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Durene/1,2,4,5-TMB
CAS: 95-93-2

Appearance
Pale yellow or white crystals
Crystallization Point
≥76.9℃
Purity
≥96%
Naphthalene Content
≤0.05%
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1,2,4-TMB
CAS: 95-63-6

Purity
≥98.5%
o-Ethyltoluene
≤0.6%
Sulfur Content
≤1ppm
View Details >

Quality Certified

ISO Triple System Certification

Eco-Friendly

EU REACH Regulation Registered

Customizable

Customized production per client needs

Company Milestones

1998

Wujiang Wanshida Company Founded

Commenced production and application exploration of aromatic solvents

2003

Continuous Capacity Expansion

Added methyl naphthalene and durene products, customer base steadily expanded

2008

ISO Triple System Certification

Enterprise management system further standardized

2012

National High-Tech Enterprise Recognition

R&D and technical capabilities continuously improved

2016

Lianyungang Base Construction Started

Promoted industrial layout, strengthened large-scale manufacturing capability

2017

Completed Shareholding Reform, Renamed Pengchen

Laid foundation for standardized operations and capital market integration

2020

Lianyungang Base Completed and Put into Production

Dual-base coordinated operations, significantly enhanced production and supply capacity

2021

Leveraging New Capacity Advantages

Production scale ranked among industry leaders, market influence continuously enhanced

2026

Continuously Advancing

Constantly optimizing products and service systems, steadily improving comprehensive competitiveness

News Updates

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PEXSOL Series High-Boiling Aromatic Solvents

Grade Standard Appearance Density
g/cm³@20℃		 Distillation Range
℃		 Flash Point
℃		 Naphthalene Content
Wt%		 CAS No.
P-1000A SA-1000
C9		 Colorless transparent 0.860-0.875 152-178 ≥42 N/A 64742-95-6
P-1000B SA-1000
C9		 Colorless transparent 0.865-0.880 158-188 ≥45 N/A 64742-95-6
P-1000ULC SA-1000
C9		 Colorless transparent 0.865-0.880 160-186 ≥45 Cumene＜0.1 64742-95-6
P-1500A SA-1500
C10		 Colorless transparent 0.870-0.890 168-192 ≥60 N/A 64742-94-5
P-1500 SA-1500
C10		 Colorless transparent 0.880-0.910 178-215 ≥62 N/A 64742-94-5
P-1500B SA-1500
C10		 Colorless transparent 0.875-0.910 178-210 ≥60 ≤1.0 64742-94-5
P-1500ND SA-1500
C10		 Colorless transparent 0.875-0.910 178-210 ≥60 ≤0.05 64742-94-5
P-1800 SA-1800
C11-C12		 Slightly yellow transparent 0.940-0.980 200-260 ≥80 N/A 64742-94-5
P-2600 SA-2000
C11-C13		 Slightly yellow transparent 0.950-0.990 230-290 ≥95 N/A 64742-94-5
P-2600ND SA-2000
C11-C13		 Slightly yellow transparent 0.950-0.990 230-290 ≥95 ≤1.0 64742-94-5
P-2000 SA-2000
C11-C13		 Slightly yellow transparent 0.950-0.990 215-290 ≥90 N/A 64742-94-5
P-3000 C13+ Slightly yellow transparent 0.960-1.000 270-320 ≥105 N/A 64742-94-5
P-3300 C13+ Yellow transparent 0.980-1.020 290-360 ≥125 N/A 64742-94-5
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Petroleum Grade Methyl Naphthalene

Test Item Unit M55 M65 B95 1-MNT 2-MNT Method
Total Methyl Naphthalene Wt% 55-65 65-75 95 min 95 min 95 min SH/T 1805
Density g/cm³ @ 20℃ 0.975-0.995 0.980-0.995 0.990-1.025 1.000-1.030 1.000-1.030 GB/T 1884 1885
1-Methylnaphthalene Wt% 10-30 20-40 40-50 95 min 5 max SH/T 1805
2-Methylnaphthalene Wt% 20-40 30-50 50-60 5 max 95 min SH/T 1805
Flash Point ℃ 80 min 80 min 90 min 105 min 100 min GB/T 261
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Pseudocumene / 1,2,4-Trimethylbenzene

Test Item Unit Specification Method
Appearance -- Colorless transparent liquid, no impurities Visual
1,2,4-Trimethylbenzene Wt% 98.5 min SH/T 1773
o-Ethyltoluene Wt% 0.60 max GB/T 1773
Sulfur PPM 1 max SH/T 1147
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Durene / 1,2,4,5-Tetramethylbenzene

Test Item Unit Specification Method
1,2,4,5-Tetramethylbenzene Wt% 96 min SH/T 1805
Crystallization Point ℃ 76.9 max GB/T 3069.2
Naphthalene Wt% 0.05 max SH/T 1805
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