In the world of domestic general-purpose ABS injection molding compounds, Tianjin Dagu DG-417 (often shortened to DG417 in industry emails, bills of lading, and inventory systems; old-timers might call it Dagu 417 or Red Three Crystal ABS 417) is a workhorse grade that has been around for over two decades. It doesn't shout "Chi Mei replacement" marketing slogans, nor is it a low-end blend of recycled materials. Instead, it firmly occupies the niche of "virgin OEM resin, medium impact, balanced MFR, and significantly cheaper than the Chi Mei 757 series." This makes it the default backup option for injection molders in South China, compounders in Ho Chi Minh City, and appliance assemblers in India looking for cost-down solutions.
The History of DG-417：
"DG" stands for Dagu. "417" is the internal sequence number for Dagu's general-purpose injection grade, corresponding to a formulation with medium impact, an MFR of approximately 15.5 g/10min (220°C/10kg), and natural milky-white granules. The grade existed during the old Tanggu plant era; after production shifted to the Lingang facility, the designation was retained, and batch-to-batch consistency has actually improved. While industry correspondence sometimes drops the hyphen as DG417, official documentation always uses DG-417-please use the hyphenated version on purchase orders.
Product Introduction：
DG-417 is an Acrylonitrile Butadiene Styrene (ABS) terpolymer (CAS 9003-56-9). It is supplied as virgin natural-colored granules. It is non-flame-retardant, unfilled, and not UV-stabilized-the classic "bread-and-butter" base resin for consumer electronics housings. HS Code: 3903309000 (China) / 3903300000 (Russia/EAEU). The material balances the chemical resistance of the Acrylonitrile component, the toughness of the Butadiene rubber, and the processability of Styrene, making it the go-to resin for standard enclosures.
Technical Parameters (Typical Values, ASTM)：
Density (23°C): 1.045 g/cm³ (D-792)
Melt Flow Rate (MFR): 15.5 g/10min (220°C/10kg, D-1238; some datasheets list 18.5 depending on test conditions)
Mold Shrinkage: 0.5–0.8% (D-955)
Tensile Strength: Approx. 50 MPa (510 kg/cm², D-638)
Elongation at Break: 40%
Flexural Strength: Approx. 75.5 MPa (770 kg/cm², D-790)
Flexural Modulus: Approx. 2468 MPa (25180 kg/cm²)
Izod Impact Strength (Notched, 23°C, 1/8"): 25 kg·cm/cm (≈25 J/m, D-256)
Rockwell Hardness: R-112 (D-785)
HDT (1.8 MPa): 80°C (D-648)
Vicat Softening Point (1kg): 99°C (D-1525)
Flammability: UL 94 HB (1.5mm)
Final settlement should refer to the Certificate of Analysis (COA) issued by the original manufacturer. Minor batch variations within ASTM tolerances are normal.
Key Characteristics：
Reliable Flow: An MFR of 15.5 provides sufficient fill for moderately thick walls (TV bezels, adapter cases, printer panels). Cycle times run about 2–3 seconds longer than high-gloss Chi Mei grades, but with a lower incidence of silver streaking.
Stiffness: Rockwell R-112 combined with a flex modulus of 2468 MPa ensures robust snap-fit assemblies-noticeably stiffer than budget ABS grades hovering around R-105.
Semi-Gloss Surface: Offers good paint, plating, and printing adhesion. However, do not compare its gloss directly to the mirror finish of PA-757K; they occupy different price tiers.
Consistency:The Lingang plant maintains decent color control (Δb within 1.5), which keeps color houses coming back.
Typical Applications
TV/Monitor front bezels, Set-top box housings, Copier/Printer covers, Telephone casings, Power strip enclosures, Small appliance bodies (fans, kettles, blenders), Automotive interior components (lower IP panels, door handle bases, vent frames), Toy bricks, Household storage containers, Industrial push-button boxes.
Not recommended for: Long-term outdoor exposure (non-UV stabilized), food contact applications (not FDA compliant), or parts requiring V0 flame retardancy.
Processing：
Primarily processed via Injection Molding. Recommended screw compression ratio: 2.0–2.5. Nozzle temperature: 210–240°C. Mold temperature: 40–80°C. Pre-drying: 80–90°C for 2–3 hours to prevent moisture-related defects. Can be used for standard extruded sheets, though injection molding is its primary domain. Note: Do not regrind virgin pellets to sell as prime material; impact strength will degrade significantly.
Customization Capabilities
As an authorized distributor, we offer more than just standard bags:
Custom Coloring: Pre-colored compounds starting at 500 kg minimums, matching Pantone numbers or customer chips (ΔE≤1.5).
Modification Services: Flame retardant grades (V-2/V-0), Glass-filled ABS (10–20% GF), or PC/ABS alloys (using LG/Chi Mei PC).
Repackaging: Switch from standard 25 kg bags to 20 kg bags with aluminum moisture barriers for smaller overseas clients.
Documentation: Every shipment includes COA, MSDS, copies of original mill warranties, and Certificates of Origin (FORM E for ASEAN / FORM ST-1 for Russia/Belarus/Kazakhstan).
Packaging：
Standard 25 kg/bag (multi-wall paper bag with PE liner, printed with the Red Three Crystal logo). 40 bags per pallet (1,000 kg). Loading: approx. 16–17 MT per 20GP container; 26–27 MT per 40HQ. Export options include fumigation-free pallets or stretch-wrapped pallets, depending on destination port requirements.
Comparative Benchmarking (Closest to Furthest)：
Chimei PA-757K (Zhangzhou):Direct competitor. High-gloss GP ABS with higher gloss and slightly better rigidity than DG-417. As of Aug 7, 2026, East China ex-factory/delivered prices for PA-757K range from RMB 10,600–11,200/MT, while DG-417 sits at RMB 11,000–11,200/MT (East China) and RMB 11,870/MT (Dongguan, South China). Normally, the price delta swings within ±RMB 200/MT. During special mill promotions in East China, PA-757K can occasionally dip below DG-417; conversely, in South China, DG-417 often carries a premium of RMB 500–600/MT.
Selection Logic:
Do not force a substitution if the customer specifies "Chi Mei 757K." If the requirement is "GP ABS, cost-sensitive, acceptable aesthetics," DG-417 is the standard domestic alternative. Reference Link:
https://www.plentyplastic.com/granules/plastic-granules/chimei-pa-757k-virgin-abs-high-gloss-general.html
Chimei PA-757K (Zhenjiang): Same specs as Zhangzhou grade, more common in East China logistics.
Chimei PA-757 (Taiwan): Premium mirror-finish grade. Currently RMB 12,800–13,350/MT (Aug 2026). Approximately RMB 1,500–2,300/MT more expensive than DG-417. Not a direct substitute.
Nan Ya AG15E1 / AG15A1: Taiwanese GP ABS with slightly higher MFR and about 70% of the gloss of 757K. Priced around RMB 11,300/MT, overlapping with DG-417 in South China.
LG HI-121H: High-impact grade (MFR ~20). Priced RMB 10,390–10,500/MT. About RMB 700–1,500/MT cheaper than DG-417, but offers higher impact strength and lower gloss. Different performance tier.
Jieyang 0215A / Jilin 750A: Legacy domestic GP ABS grades. Priced RMB 9,670–10,170/MT. Positioned for extreme cost sensitivity; DG-417 offers better stiffness and batch consistency.
MOQ & Lead Time：
Domestic Spot: MOQ 25 kg (1 bag). Dispatch within 24–48 hours from Yuyao or Zhangmutou warehouses.
Export FCL: MOQ 1×20GP (approx. 16 MT). Mixed loads of 1–2 grades allowed for approved accounts.
Custom Coloring/Modification: MOQ 500 kg. Lead time: 7–10 working days (includes sampling approval).
FOB Tianjin (Direct Mill): Standard lead time: 7–15 days. Peak season (Sept–Oct): Extends to approx. 20 days.
Why Choose Us：
We are an authorized distributor within the supply chains of LG, Chi Mei, INEOS Styrolution, ZPC, Yulong, and DAGU. We source DG-417 either via direct ex-Lingang shipments or from our bonded warehouses in South China-we do not deal in counterfeit "Dagu" material. Every batch is traceable to the original mill lot number, and SGS inspections are supported. Our CIF quotations (HCMC/Nhava Sheva/St. Petersburg) include buffers for ocean freight volatility; we maintain consistent pricing between initial quotes and final contracts. Trial orders start at 1 FCL, with 30–60 day LC terms available upon conversion to framework agreements.
FAQ：
Q1: Can DG-417 fully replace PA-757K?
A: Structurally, yes. Visually, PA-757K offers superior high-gloss. Do not substitute for mirror-finish painting or if the client specifically mandates Chi Mei. It is a direct fit for standard black housings, internal components, and toys.
Q2: Is there a difference between DG417 and DG-417?
A: None. It is a typographical variation. The manufacturer uses DG-417; logistics documents sometimes omit the hyphen.
Q3: Are there risks with HS classification for exports to Vietnam/India?
A: No. Use HS 390330. Declare as "ABS copolymer, virgin, injection grade, DG-417, Tianjin Dagu" and attach the COA. Customs in Russia, Vietnam, and India recognize this description.
Q4: Is DG-417 food-grade?
A: Standard DG-417 is not food-contact compliant. Do not use for cutlery or water bottles. Request Dagu's FG series or alternative grades for food-safe applications.
Q5: How does it compare to LG HI-121H?
A: HI-121H is high-impact and generally cheaper. DG-417 is a medium-impact general-purpose grade. Do not compare across tiers; you are comparing budget vs. performance.
Q6: Do you have DG-417 in stock?
A: Yes, we maintain rotating stocks of 50–100 MT in East China (Yuyao/Shanghai) and South China (Dongguan). Booking 7 days in advance is required for export containers.
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