Changshu Dongyu Insulated Compound Materials is a source-reviewed supplier profile for chopped strand mat, fiberglass cloth, and fiberglass mat, with every search topic tied to company-published product or process evidence and separated from buyer-side verification requirements.
Changshu Dongyu Insulated Compound Materials Co., Ltd., trading as DYF, describes itself on its official site as a fiberglass-composite materials developer, manufacturer and seller founded in 1996. The current portfolio spans fiberglass roving and yarn, chopped strand mat, surface tissue, combo mat, multiaxial fabrics, woven cloth, mesh, composite products, fire blankets and carbon-fiber fabric. Its official technical pages publish powder- and emulsion-bonded E-glass chopped strand mats; surface tissues for winding, hand lay-up or pultrusion; direct roving for winding, pultrusion or weaving; and electronic-grade fiberglass cloth. China Composites Expo lists the same Chinese entity and states that its products reach multiple countries and regions. Product performance, certification, customer, award and export-footprint statements are company- or organizer-published and have not been independently audited by GetFRP.
The reviewed product and process scope makes this supplier relevant to buyer searches for chopped strand mat, fiberglass cloth, fiberglass mat, and carbon fiber fabric. These phrases describe products or processes supported by the cited public scope; they do not expand the supplier's catalog or replace technical qualification.
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This procurement profile is built for materials engineers and converters evaluating reinforcement form, sizing compatibility, package quality and downstream process stability. It organizes Changshu Dongyu Insulated Compound Materials Co., Ltd.'s published products, processes, certificate references and official sources around the primary topic “Changshu Dongyu Insulated Compound Materials Powder- and emulsion-bonded E-glass chopped strand.” The objective is to help a buyer decide whether to open a controlled RFQ, not to turn a broad company catalog into an unsupported approval.
Changshu Dongyu Insulated Compound Materials Co., Ltd. currently lists 6 product or service groups and 6 manufacturing or support capabilities in this reviewed record. The public scope indicates what to investigate, while the buyer remains responsible for drawings, design calculations, standards, current certificates, sample approval and order-specific commercial confirmation. Claims below are attributed to the attached source set unless GetFRP explicitly labels them as qualification guidance.
Dongyu's chopped-strand-mat page publishes M211 and M212 powder grades at multiple weights and widths with stated UP, VE and EP compatibility. Its direct-roving page identifies 312, 312T, 386, 386T and 386H grades for winding, pultrusion or weaving. Surface tissue is divided into S-BM(W), S-BM(H) and S-BM(P) winding, hand-lay-up and pultrusion families, while the electronic-cloth page lists specifications such as 106, 1080, 2116 and 7628. These figures are not interchangeable across grades. An RFQ should state E-glass or other glass composition; filament diameter; linear density; sizing and target resin; chopped length; binder chemistry and content; area weight and tolerance; width; roll diameter or weight; moisture; loss on ignition; wet-out and impregnation rate; tensile strength; distribution uniformity; fuzz and permitted joints. Electronic cloth and multiaxial reinforcement also require weave, warp and fill count, fiber directions, stitching yarn, thickness, visual-defect limits, winding tension and splice rules. Packaging, pallet stack, storage temperature and humidity and first-in-first-out controls belong in the purchase specification. The official site says the company has ISO 9001, UKAS and DNV GL-related approvals, but the reviewed pages do not expose a complete current package sufficient to verify the legal entity, site, scope, number and validity. No certification is recorded as independently verified. Browser access to the official site temporarily returned HTTP 429 during review, although normal requests to the same domain exposed consistent company, product, contact and registration content. Reconfirm the domain, contact and secure connection before sending drawings, exchanging credentials or issuing payment.
No company-level certification is listed on this profile.
Evaluate Changshu Dongyu Insulated Compound Materials Co., Ltd. as a potential composite reinforcement supplier for chopped strand mat, verify the public evidence and prepare a comparable RFQ.
Changshu Dongyu Insulated Compound Materials Co., Ltd. includes this product in its published supply scope. Treat that listing as a starting point: request the current datasheet or drawing, material and construction, available grades or dimensions, guaranteed properties, production site, quotation revision and evidence that represents the exact item offered.
For Fiberglass surface tissue for winding, hand lay-up and pultrusion, buyers should convert the catalog description into an acceptance specification. Confirm standard and custom options, raw-material system, critical tolerances, surface or finish, test basis, sample route, MOQ, lead time and packing. Any alternative proposed by Changshu Dongyu Insulated Compound Materials Co., Ltd. should be identified explicitly rather than treated as automatically equivalent.
This product broadens the supplier's public portfolio, but GetFRP does not infer approval from a product name alone. Ask Changshu Dongyu Insulated Compound Materials Co., Ltd. for the grade or model designation, manufacturing route, current technical file, production and test location, batch traceability and the limits that apply to published performance values.
Changshu Dongyu Insulated Compound Materials Co., Ltd. publishes Chopped-strand mat and surface-tissue production as part of its capability scope. Buyers should ask which site and equipment perform the work, the practical size or material limits, the normal control records and whether the proposed order uses the same route. Subcontracted stages should be visible in the quality plan.
The relevance of Fiberglass weaving and electronic-cloth production depends on the requested product and acceptance criteria. During qualification, request a process flow, critical control points, inspection or test method, operator or equipment qualification where applicable, nonconformance handling and a recent example that represents the offered production route.
For sourcing purposes, Direct and assembled roving sizing is a capability signal rather than independent verification. Confirm capacity, tooling or fixture availability, setup and changeover assumptions, lot definition, sample approval and traceability. The quotation should identify any limitation that could affect geometry, performance, appearance or delivery.
Buyers evaluating Multiaxial-fabric and combo-mat stitching should connect the process claim to evidence: an equipment list, controlled procedure, representative report, production photograph or witnessed sample may each answer a different risk. Changshu Dongyu Insulated Compound Materials Co., Ltd. should also explain how the result is checked before release and recorded for the shipment.
These are sourcing contexts suggested by the published product scope, not confirmed project references. Validate the exact application, design basis and evidence in the RFQ.
Changshu Dongyu Insulated Compound Materials Co., Ltd.'s public scope suggests a potential route for piping, tanks or corrosion-resistant process equipment. The RFQ should define service chemistry, temperature, pressure or stiffness class, liner, structural wall, joints, supports, nozzles, inspection and transport. Project-specific design and evidence remain necessary before the supplier can be treated as a fit.
Changshu Dongyu Insulated Compound Materials Co., Ltd.'s reinforcement range can be screened for laminating, pultrusion, winding, molding or conversion programs. Buyers should confirm grade, sizing, architecture, width, tex or areal weight, package, splice and moisture limits, then run a representative processing trial before approving the material for repeat production.
Changshu Dongyu Insulated Compound Materials Co., Ltd.: The listed reinforcement products may be relevant to thermoset laminating, pultrusion, winding or molding programs. Buyers should confirm fiber type, sizing chemistry, tex or areal weight, roll or package format, moisture control and compatibility with the intended resin and line conditions.
Changshu Dongyu Insulated Compound Materials Co., Ltd.'s source record currently includes Official Dongyu Fiberglass Website, Dongyu Company Profile, Dongyu E-glass Chopped Strand Mat, Dongyu Fiberglass Surface Tissue. These links let a buyer distinguish company-published information from GetFRP's own qualification guidance and return to the original context when a claim changes.
No company-level certification is presently listed in the reviewed profile. That does not prove that no document exists, but it means the RFQ should ask for the quality-system certificate and every product-specific test or approval needed by the buyer rather than assuming a certification from market reputation.
GetFRP last recorded a public-source review date of 2026-08-25. Public websites and catalogs can change after review, so commercial decisions should use newly downloaded files and direct supplier confirmation. GetFRP's public or claimed status describes profile ownership and identity controls; it does not certify every product statement or predict order performance.
Official product catalogs, web directories and technical guides published by the supplier.
Official company, portfolio, news and exhibition information.
Open catalogOfficial history, product scope and supplier-stated market reach.
Open catalogM211 and M212 grades, area weights, widths and published resin compatibility.
Open catalogWinding, hand-lay-up and pultrusion series with published parameters.
Open catalogWinding, pultrusion and weaving grades plus storage guidance.
Open catalogPublished fiberglass-cloth styles, counts, area weights and tensile values.
Open catalogOfficial headquarters, international sales, domestic sales, production and QC contacts.
Open catalogOrganizer entry for Dongyu, its categories and exhibitor description.
Open catalog
Changzhou Tianma Group Co., Ltd. is based in Xinbei District, Changzhou, Jiangsu. Both the official website and China Composites Expo identify this legal entity, while the website also notes its former identity as Building Materials Factory 253. The site traces the enterprise lineage to a state-planned project begun in 1960 and calls the business the cradle of China's FRP industry; 1960 is therefore presented here as the start of the organizational lineage, not the current legal entity's registration date. The published portfolio spans glass-fiber yarns and products, unsaturated polyester and vinyl ester resins, gelcoats and auxiliaries, SMC/BMC, finished FRP products, and wind-energy and photovoltaic composites. China Composites Expo lists the exhibitor as CHANGZHOU TIANMA GROUP CO., LTD. and publishes booth 7M06 for 2026. History, industry-position, scale, capacity, market and product-performance statements are company- or organizer-published and have not been independently verified by GetFRP.
China Jushi Co., Ltd. is a core enterprise in China National Building Material's fiberglass business division, focused on fiberglass and finished fiberglass articles. Jushi's English website states that the company listed on the Shanghai Stock Exchange in 1999 under stock code 600176 and operates fiberglass production bases in China, Egypt and the United States.
Zhongfu Shenying Carbon Fiber Co., Ltd. was established in 2006 and is part of China National Building Material Group. The company develops, manufactures and sells carbon fiber and carbon-fiber composite materials, and was listed on the Shanghai Stock Exchange in 2022 under stock code 688295.