Polymer Additives from China
PVC stabilizers, antioxidants, UV absorbers, plasticizers, processing aids, flame retardants, and impact modifiers for plastic compounding and master-batch production.
Polymer additives are a high-value, technical category, buyers are master-batch producers, plastic compounders, and resin manufacturers running specific formulations where the additive profile defines the end-product properties. The chemistry is varied: hindered phenolic antioxidants (1010, 1076), phosphite secondary antioxidants (168), HALS UV stabilizers (770, 622, 944), benzotriazole UV absorbers (326, 327, 328), brominated and phosphate flame retardants, calcium-zinc and tin-based PVC stabilizers, plasticizers (DOP, DOTP, DINP), and processing aids.
Compliance scrutiny on polymer additives runs higher than on most categories. Several traditional additives (specific lead-based PVC stabilizers, certain brominated flame retardants, some phthalate plasticizers) have been restricted or are under risk evaluation in the US, EU, and Australia. Before booking, we cross-check the substance against TSCA Active List status, REACH SVHC candidate list, and AICIS introduction category. A substance that ships routinely today can become regulated within 12 months.
Factory verification is the second consistent theme on polymer additives. The market has a long tail of small Chinese producers selling low-spec additive at low price, adequate for some commodity applications, inadequate for buyers who run quality-sensitive formulations. We work with the upper-tier producers in Shandong, Jiangsu, and Zhejiang who ship to the same multinational buyers we do.
Products we ship
9 polymer additives we move regularly
PVC Resin SG-5 / SG-3
Non-DGApplications: Rigid pressure pipe (SG-5), window profiles, cable insulation. SG-3 for flexible calendered sheet and plastisol.
PET Resin. Bottle Grade
Non-DGApplications: CSD and water bottle preforms (IV 0.80), packaging film, strapping tape, polyester fiber feedstock (IV 0.65 to 0.68)
Melamine-Formaldehyde Resin (MF Resin)
Non-DGApplications: Decorative laminates (HPL/LPL), dinnerware, paper wet strength treatment resin, textile finishing
Potassium Carbonate (K₂CO₃)
Non-DGApplications: Glass manufacturing (borosilicate, optical, TV glass), potash fertilizer, baking powder precursor, welding flux, inorganic pigment production
Glycerol Monostearate (GMS 90)
Non-DGApplications: Food emulsifier E471 for bread and margarine, anti fog additive for PE film, internal lubricant for PVC and PS
Rubber Accelerator CBS (N-Cyclohexylbenzothiazole-2-sulfenamide)
Non-DGApplications: Delayed action primary accelerator for sulfur vulcanization of NR, SBR and BR, tires, hoses, conveyor belts
Rubber Antioxidant TMQ (RD)
Non-DGApplications: Anti aging antioxidant for NR and synthetic rubbers against heat, flex fatigue and copper catalyzed oxidation
Carbon Black N220 / N330 / N550 (rubber grade)
Non-DGApplications: Reinforcing filler in tire treads (N220/N330), carcass and sidewall compounds, industrial rubber goods and conveyor belts
Zinc Oxide. Rubber Grade
Non-DGApplications: Rubber vulcanization activator, promotes accelerator activity and cross link density in sulfur cured compounds
This is a representative selection, not the full list. Send us the CAS number or product description and we will quote the same day.
Documentation chain
Terms that come up on every polymer additives shipment
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TSCA, Toxic Substances Control Act
US federal law that gives the EPA authority to track and restrict the manufacture, import, processing, distribution, and disposal of industrial chemicals.
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REACH, Registration, Evaluation, Authorisation and Restriction of Chemicals
EU chemical regulation requiring importers and manufacturers to register every substance manufactured or imported into the EU above 1 tonne per year. Registration is identity-based and dossier-based, not inventory-lookup-based, which makes it stricter than TSCA in the US.
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HS Code, Harmonized System Code
A six-digit international product classification code used by customs authorities worldwide to identify goods, assess duties, and apply trade controls. Countries extend the six-digit base with additional digits for tariff and statistical purposes (10-digit HTS in the US, 8-digit CN code in the EU, 10-digit AHECC in Australia).
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COA, Certificate of Analysis
A document issued by the manufacturer (or by an accredited third-party lab) certifying that a specific batch of a chemical or material meets the agreed specification. Lists tested parameters, results, the test methods used, and a batch number that ties back to production.
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FOB, Free On Board
Incoterm under which the seller delivers the goods on board the vessel at the named port of shipment. Risk and cost transfer to the buyer once the cargo crosses the ship's rail. The buyer arranges and pays for sea freight, marine insurance, and all destination-side costs.
Need polymer additives from China?
Send us the spec.
Product name, CAS number, HS code, or a rough description is enough to start. Our Shanghai team responds within 24 hours with factory-direct pricing, the documentation chain, and the duty stack quantified.
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