SINOPLAST

What SINOPLAST does

SINOPLAST (legally Guangdong Sinoplast Advanced Materials Co., Ltd., 广东中塑新材料股份有限公司) is a privately held Chinese manufacturer of modified engineering plastics and specialty polymer materials, operating under the POLYKING (宝利金) brand. Founded as Hong Kong Sinoplast in 2002 and incorporated in Guangdong in 2008, the company runs three production bases (Dongguan Changan, Dongguan Water Town, and Jiangxi Ji'an) and a national sales/service network across Shenzhen, Suzhou, Chongqing, and Hong Kong. It completed a joint-stock restructuring in 2022 and holds 'Little Giant' specialized enterprise status from the Ministry of Industry and Information Technology.

Its product portfolio spans general plastics (ABS, PP), engineering plastics (PC, PA6/PA66, PA12, PBT, PET, POM, M-PPE, PMMA), plastic alloys (PC/ABS, PC/PBT), specialty engineering plastics (PPS, LCP, PES, PEEK, HTPA), thermoplastic elastomers (TPE, TPU), and a line of application-specific innovative materials including LDS (Laser Direct Structuring, licensed from German LPKF), NMT (Nano Molding Technology), PPA nylon, high-hardness PC/IMT, LED bracket materials, and new energy vehicle (NEV) compounds. R&D investment exceeds 5% of sales with 17% of the workforce in R&D roles and over 100 authorized invention patents.

SINOPLAST operates a direct enterprise sales model with dedicated technical support engineers serving B2B customers in consumer electronics (smartphones, tablets, laptops, wearables), smart home/IoT, optoelectronics/LED, new energy vehicles, sanitary, and industrial/electrical sectors. Named customers include Huawei, ZTE, HTC, Meizu (LDS smartphone antenna materials) and major LED manufacturers (PCT, PA9T LED bracket materials). Revenue is generated primarily through one-time sales of customized and standard modified plastic compounds bundled with technical consultation services; no pricing is publicly disclosed and all quotes go through direct sales representatives.

Name

SINOPLAST

Legal name

广东中塑新材料股份有限公司

Website

https://sinoplast.com.cn

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

1–10 employees

Short description

SINOPLAST is a privately held Chinese manufacturer of modified engineering plastics and specialty polymers (POLYKING brand), supplying tier-1 OEMs in consumer electronics (Huawei, ZTE, HTC, Meizu), LED, smart home, and new energy vehicles across three production bases in Guangdong and Jiangxi.

Ownership category

akta.pro rank

Product category

Modified Engineering Plastics

NAICS

Plastics Material and Resin Manufacturing (325211)

SIC

Plastic Materials, Synth Resins & Nonvulcan Elastomers (2821)

akta.pro primary industry

Specialty Polymers & Resins (Engineered Materials) (IMAEABAK)

akta.pro secondary industry

Engineering Plastics & Performance Resins (PC, PA, POM, PBT, PMMA) (IMAEADAI)

Keywords

• Modified engineering plastics
• Special engineering plastics
• Polymer materials manufacturing
• LDS laser structuring materials
• Thermoplastic elastomer compounds

Headquarters

HQ city

Guangdong

HQ country

China

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Technology or R&D, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Modified Engineering Plastics Sales: Sale of standard and customized modified engineering plastics, special engineering plastics, plastic alloys, and thermoplastic elastomers under POLYKING brand. Products sold directly through sales team to manufacturers in consumer electronics, automotive, and industrial sectors.
2. Customized Product Development: Tailored product development services including material selection, project development, and application consulting. Full-range services from product design to post-processing support.
3. Technical Support Services: Technical support engineering services including material features consultation, product design advice, mold design guidance, manufacturing technique support, finishing operation and quality control assistance.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

SINOPLAST researches, develops, produces, and sells modified engineering plastics and special new materials under the POLYKING brand. It offers standardized polymer compounds and customized material solutions to manufacturers across consumer electronics, automotive, LED, and industrial sectors. The company provides full-range technical services spanning material selection, mold design guidance, processing support, and quality control assistance.

Product overview

SINOPLAST (广东中塑新材料股份有限公司) is a professional engineering plastics supplier and national high-tech enterprise specializing in polymer material R&D, production, and sales. The company operates under the POLYKING® (宝利金) brand and offers a comprehensive portfolio across six product categories: (1) General Plastics: ABS and PP materials; (2) Engineering Plastics: PC, PA6/PA66, PA12, PBT, PET, POM, M-PPE, and PMMA; (3) Plastic Alloys: PC/ABS and PC/PBT; (4) Special Engineering Plastics: PPS, LCP, PES, PEEK, and HTPA; (5) Thermoplastic Elastomers: TPE and TPU; and (6) Innovative/Customer-Specific Products: LDS materials (with German LPKF patent authorization), NMT nano molding materials, high hardness PC/IMT materials, PPA nylon materials, tablet/laptop materials, smart wearable materials, smart home materials, LED bracket materials, new energy vehicle materials, microelectroacoustic/connector materials, and bathroom product materials. SINOPLAST serves consumer electronics, smart home, optoelectronics lighting, outdoor energy storage, and new energy vehicle sectors. The company provides both standardized products and tailored solutions including product design, material selection, project development, and post-processing services.

Differentiator

Problem solved

Functional benefit

Brands

• POLYKING 宝利金: Engineering plastics brand offering comprehensive product lines including PC, PA, PBT, POM, PPE, PMMA, PPS, LCP, PES, PEEK, HTPA, TPE, TPU, and various alloy materials for consumer electronics, automotive, and industrial applications.

Products and services

• POLYKING PC Polycarbonate Amorphous engineering thermoplastic with mechanical, optical, electrical, and thermal properties; available in transparent, glass-fiber reinforced, flame-retardant, UV-resistant, and LDS-compatible grades for electronics, automotive, packaging, and electrical industries.
• POLYKING PA6/PA66 Polyamide Polyamide engineering plastics with strength, toughness, high rigidity, thermal stability, and chemical resistance; used in electronics, automotive, communications, mechanical engineering, and sports equipment.
• POLYKING PA12 Polyamide High-performance polyamide with low water absorption, lightweight properties, chemical resistance, and mechanical strength; suitable for injection, extrusion, and blow molding.
• POLYKING PBT Polybutylene Terephthalate Semi-crystalline material with high rigidity, strength, dimensional stability, low moisture absorption, and chemical resistance for high-performance industrial products.
• POLYKING PET Polyethylene Terephthalate Thermoplastic polyester with mechanical strength, heat resistance, electrical properties, chemical resistance, and dimensional stability for electrical, mechanical, and automotive applications.
• POLYKING POM Polyoxymethylene Engineering plastic with high mechanical strength, creep resistance, fatigue resistance, wear resistance, and chemical and oil resistance; used in automotive, electrical, lighting, and home appliances.
• POLYKING M-PPE Modified Polyphenylene Ether Amorphous engineering thermoplastic with heat resistance, dimensional stability, impact resistance, electrical properties, flame retardancy, and low density.
• POLYKING PMMA Polymethyl Methacrylate Toughened high-gloss polymer with optical properties, weather resistance, high surface hardness, and scratch resistance.
• POLYKING PC/ABS Alloy Combines PC's impact resistance and fatigue performance with ABS moldability; maintains comprehensive performance in thin-wall and complex-shaped products.
• POLYKING PC/PBT Alloy Alloy with chemical resistance, high/low temperature resistance, low-temperature mechanical strength, and moldability for power tools, communications, and electronics.
• POLYKING PPS Polyphenylene Sulfide Heat-resistant engineering plastic with mechanical strength, thermal stability, electrical properties, chemical corrosion resistance, low mold shrinkage, and intrinsic fireproofing.
• POLYKING LCP Liquid Crystal Polymer Liquid crystal polymer with strength, high elastic modulus, high heat resistance, chemical resistance, vibration absorption, and dimensional stability/fluidity.
• POLYKING PES Polyether Sulfone Specialty plastic with hydrolysis resistance, dimensional stability, toughness, fatigue resistance, light transmittance, and inherent flame retardancy.
• POLYKING PEEK Polyether Ether Ketone High-performance plastic with temperature resistance, low friction coefficient, wear resistance, fatigue resistance, and chemical/hydrolysis resistance.
• POLYKING HTPA High Temperature Polyamide High-temperature nylon with thermal, electrical, physical, and chemical resistance; maintains rigidity, strength, and dimensional accuracy at elevated temperatures.
• POLYKING TPE Thermoplastic Elastomer Plastic elastic material combining thermoplastic processing with vulcanized rubber properties; injection moldable or extrudable without vulcanization and fully recyclable.
• POLYKING TPU Thermoplastic Polyurethane Thermoplastic polyurethane elastomer between flexible rubber and rigid plastic with Shore 60A-72D hardness range, providing toughness and durability.
• POLYKING ABS Acrylonitrile-Butadiene-Styrene Copolymer with comprehensive performance, dimensional stability, and moldability; used in communications, digital, office equipment, and home appliances.
• POLYKING PP Polypropylene Polypropylene with comprehensive properties, chemical stability, moldability, and cost-effectiveness; used in electronics, automotive, home appliances, and industrial applications.
• LDS (Laser Direct Structuring) Special Materials Special materials enabling laser-activated plating on plastic substrates; SINOPLAST is the first domestic company to receive German LPKF patent authorization. Widely used in 5G communications, smartphones, and automotive electronics for internal antennas and metallized features.
• NMT (Nano Molding Technology) Special Materials Materials enabling metal-plastic integration through nano-level bonding for lightweight components with metal appearance; compatible with aluminum, magnesium, copper, stainless steel, and titanium.
• PPA Nylon Special Materials High-performance PPA-based engineering plastics (PA9T grades) with low water absorption, dimensional stability, high rigidity, strength, and chemical resistance; used in electronics, automotive, and LED products.
• Customized Material Development and Technical Support Services Tailored product development services including material selection, project development, mold design guidance, processing technique support, finishing operations, and quality control assistance for B2B customers in consumer electronics, automotive, and industrial sectors.

Quantifiable outcome

• LDS modified plastics achieved leading domestic market share and recognized as Guangdong Manufacturing Single Champion product
• +2 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Dongguan University of Technology (东莞理工学院)coreStrategic or Co-development Partner · 16 September 2025Signed professional degree graduate joint training base cooperation agreement. Focuses on cultivating high-quality professional talents through joint supervision of graduate students, scientific research collaboration, faculty training, and academic exchanges. The base provides theory-practice integrated platform for graduate students.
• Huazhong University of Science and Technology (华中科技大学)coreStrategic or Co-development PartnerJoint laboratory for Materials Science and Engineering. Long-term research cooperation in polymer materials and engineering plastics R&D.
• South China University of Technology (华南理工大学)coreStrategic or Co-development PartnerEngineering Plastics Joint Laboratory. Collaboration on engineering plastics research, modified materials development, and polymer materials studies.
• Jinan University (暨南大学)coreStrategic or Co-development PartnerIndustry-Academia-Research base for engineering plastics. Joint research on advanced materials and technology development.
• North University of China (中北大学)minorStrategic or Co-development PartnerJoint laboratory with special polyamide resin pilot production line and raw material resin production capability.
• Shenzhen Polytechnic (深圳高等职业技术学院)minorStrategic or Co-development PartnerEngineering Plastics R&D and Testing Center. Collaboration on engineering plastics testing and research.
• Shanxi Province Engineering Plastics Engineering Technology Research CenterminorStrategic or Co-development PartnerJoint laboratory for polymer materials research and development.
• Guangdong University of Technology (广东工业大学)minorStrategic or Co-development PartnerScientific research cooperation in engineering plastics and modified materials field.
• LPKF (Germany)coreTechnology or IntegrationPatent licensing partnership for LDS (Laser Direct Structuring) technology. SINOPLAST is the first domestic company to obtain LPKF patent authorization, enabling large-scale LDS material production.

Scale indicators7 records

Recent moves11 records

Expansion highlights4 records

Broad incumbents

• LG Chem: Korean chemical company with significant engineering plastics production (LUPOY PC/ABS, LUPOL PP compounds, LUMAX PA) serving automotive, electronics, and IT customers globally. Comparable to SINOPLAST in modified PC/ABS for electronics and broader engineering plastics portfolio, with Korean OEM relationships relevant for SINOPLAST's Asian customer base.
• SABIC: Saudi-domiciled global petrochemicals leader producing engineering plastics including NORYL (modified PPE), LEXAN polycarbonate-equivalents, and a full range of PC, PA, PBT, POM. Competes broadly in the same engineering plastics categories SINOPLAST serves but at much greater scale and with global reach.
• Covestro: German specialty materials producer with a strong polycarbonate and engineering plastics portfolio (Makrolon PC, Bayblend PC/ABS, Pocan PBT) serving automotive, electronics, construction, and healthcare. Directly comparable product overlap in PC and PC/ABS alloys that SINOPLAST supplies into Chinese consumer electronics.
• BASF: Global chemical major with a Performance Materials business producing engineering plastics (Ultramid PA, Ultraform POM, Ultradur PBT) serving automotive, electronics, and industrial customers. Overlaps SINOPLAST's product categories and end markets, particularly automotive, at much larger scale with broader geographic reach.
• Asahi Kasei: Japanese diversified materials producer offering modified polyphenylene ether (XYRON mPPE), polyamide (LEONA), and a broad portfolio of engineering plastics for automotive and electronics. Asahi Kasei is a relevant global comparator particularly for SINOPLAST's M-PPE and PA offerings.

Others

• Kuraray: Japanese specialty chemical company that supplies PA9T base resin under partnership to SINOPLAST for PPA materials development. While not a direct competitor in modified plastics, Kuraray is an enabling technology partner and supplier that sits upstream of SINOPLAST's PPA nylon product line, making it thematically comparable and a critical ecosystem participant.

Direct peers

• Silver Age Engineering Plastics (银禧科技): A-share listed (300221.SZ) Chinese modified plastics producer serving consumer electronics, automotive, and home appliance end markets with PP, PA, PC, ABS, PBT, and specialty alloys. Direct comparator in China-modified-plastics space with similar end-market exposure to 3C electronics.
• China XD Plastics (中国鑫达): One of China's largest specialty modified plastics producers serving automotive, electronics, and infrastructure. Listed on NASDAQ previously (now delisted) with deep presence in modified PP, PA, and engineering plastics. Comparable as a domestic Chinese modified plastics competitor focused on automotive and industrial applications.
• WOTE Advanced Materials (沃特股份): A-share listed (002886.SZ) Chinese specialty engineering plastics producer focused on modified PC, PA, PBT, PPA, and high-performance materials for consumer electronics, automotive, and IoT. Closely comparable to SINOPLAST in specialty engineering plastics positioning, China-centric customer base, and product mix including PPA and high-temperature nylons.
• Kingfa Sci & Tech (金发科技): China's largest modified plastics producer (A-share listed, 600143.SH), offering a full portfolio of modified PP, PA, PC, ABS, PBT, and specialty engineering plastics across automotive, electronics, and home appliance end markets. Directly comparable to SINOPLAST in product scope, modified plastics focus, and Chinese customer base, but materially larger in scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/shenzhen-sinoplast-advanced-material-co--ltd

Compliance20 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SINOPLAST