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Automatic Drop Door Bottom Seals From Factory
US$9.00
300-399 Sets
US$8.60
400+ Sets
Product profile
Customization
AvailableAfter-sales Service
SupportWarranty
2 YearsModel NO.
BY-069Type
Door Drop SealMaterial
Alu,EPDMMin / Max Gap
3-13mmSeal Color
Black,GreySuface Finish
Aluminium Anodised 15 MicronsLocation
Install on The Bottom of Single or Double DoorsFuntion
Prevents Fire or Smoke Spreading Across Various FiAdvantage
Soundproof Smoke and Fire PreventionTransport Package
30PC/CartonSpecification
380-1200mmTrademark
BYOrigin
ZhejiangHS Code
732690Production Capacity
5000PCKey features
Automatic Spring-Loaded Mechanism: Lifts seal clear of floor automatically when door opens for easy access.
Effective Acoustic Insulation: Provides excellent barrier to airborne sound and ensures acoustic attenuation.
Fire and Smoke Prevention: Prevents fire or smoke spreading across various fire-rated door applications.
Adjustable Sealing Gap: Accommodates sealing gaps ranging from 3mm to 13mm for versatile installation.
Durable Material Construction: Made of Aluminum Alloy and EPDM Rubber for heavy-duty concealed use.
Customizable Colors and OEM: Available in Black and Grey; supports OEM customization based on drawings.
2-Year Warranty Coverage: Comprehensive 2-year warranty provided for all mechanical defects.
Professional QC and Support: Sample confirmation before production and 24/7 after-sales service support.
Company profile

Business Type: Manufacturer/FactoryExport Year: 2014-12-05Nearest Port: Shanghai, NingboAverage Response Time: ≤10.52hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA
AI-Powered supplier vetting
SummaryHangzhou Biyou Building Materials Technology Co., Ltd. is identified as a China-based manufacturer/factory with production in Jiaxing, Zhejiang, specializing in weather sealing and passive fire protection products. It reports ISO 9001 and ISO 14001 management-system certifications, 10 production lines, 6–10 R&D engineers, and 6–10 quality-control staff. The supplier states that 90% of sales are exports, has self-operated import/export rights, and began exporting in 2014. Its stated product range covers fire, smoke, acoustic, TPE, silicone, and PVC sealing products. The available trade records show limited transaction evidence, with one transaction associated with each listed buyer record; therefore, customer-case depth and financial credibility cannot be fully assessed. After-sales service and product customization are mentioned or implied only partially and lack sufficient detail for a definitive evaluation.
Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory, with an international sales office in Hangzhou and a factory in Jiashan, Jiaxing, Zhejiang. Its stated business focuses on manufacturing weather-sealing and passive-fire products, supported by 10 production lines.
CertificationsThe supplier reports holding ISO 9001 and ISO 14001 management-system certifications. These certifications provide explicit evidence of formal quality and environmental management systems, although the slices do not provide certificate numbers, issuing bodies, or validity dates.
After-Sales capabilityThe company states that it provides efficient after-sales service and has professional R&D resources and high-quality products. However, no specific service scope, response process, support locations, warranty terms, or service-performance evidence is provided.
R&D capabilityThe supplier states that it has a professional R&D group, and the reported total experience of its R&D engineers is 6–10 years. This supports the existence of an experienced R&D function, but the slices do not document patents, new-product launches, proprietary technologies, or measurable innovation outcomes.
Production capacityThe supplier identifies itself as a manufacturer and reports 10 production lines, 6–10 quality-control staff, and a factory location in Jiaxing, Zhejiang. These facts provide explicit evidence of established production infrastructure and quality-control staffing.
Product Q&A
Q:Are you a manufacturer or trading company?
A:
We are an International trading company also is a professional door and windows seal,fire and acoustic seal products manufacturer with more than 20 years experience for domestic and International market.
Q:What is the payment method?
A:
For samples: T/T, western union. For orders: We prefer T/T, other ways should be confirmed first. For new customer,30% advanced payment before producing ,70% before delivering usually.
Q:Do you offer free samples?
A:
Free samples are available .
Q:Do you offer OEM service and can you product as our drawings?
A:
Yes, we can customize according to your drawing or make drawing according to sample as your requirement.
Q:Do you accept our design on boxes?
A:
Yes. We accept.
Send Inquiry
*To:
Hangzhou Biyou Building Materials Technology Co., Ltd.
Hangzhou Biyou Building Materials Technology Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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