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Heavy-Duty DJ-330 Concrete Polishing Machine for Large Projects
US$850.00
1-4 Sets
US$825.00
5-9 Sets
US$800.00
10+ Sets
Product profile
Customization
AvailableType
Angle GrinderPower Source
HydraulicModel NO.
DJ-330Object
Drilling BitApplication
ConstructionDisc(Wheel) Type
Grinding DiscMaterial
MetalWorking Style
High-speed universalDisc Diameter
330mmVariable Speed
With Variable SpeedModel No.
DJ330Working Width
330mmRated Voltage
380/220VWorking Motor
0.75kwDaily Use
ConcreteSpeed
750r/MinPackage
Wooden BoxesDust Box Capacity
20LPackage Size
1100*460*980mmWeight
145kgObjection
RoadNumber of Grinding Heads
4*270mmEquipment Rotation Speed
300-1500 RpmMotor Power
4kwVariable Frequency Power
4kwTransport Package
Wooden PackageSpecification
145kgTrademark
DajiaOrigin
ChinaHS Code
8464209000Key features
Versatile Surface Treatment: Ideal for leveling, grinding, polishing concrete, terrazzo, granite, and removing coatings.
Flexible Dust Collection: Self-contained dust collection system ensures high efficiency and simple operation.
Customizable Grinding Heads: Grinding heads and consumables like diamond heads or sandpaper can be freely configured.
Independent Motor Control: Main motor and dust suction motor are controlled by separate switches for convenience.
High Work Efficiency: Designed for high-speed universal working style with efficient grinding performance.
OEM and ODM Services: Offers full customization, minor customization, and flexible customization options.
ISO 9001 Certified: Manufactured under ISO 9001 international quality management system certification.
100% Product Inspection: Every finished product undergoes visual and function inspection before packaging.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 13 years CertifiedNearest Port: Qingdao portAverage Response Time: ≤4.23h
AI-Powered supplier vetting
SummaryThe supplier is identified as a limited company and factory with 11 employees, associated companies, and a valid import/export license. It reports multiple machining facilities, eight product series, more than 100 models, and broad customization capabilities. ODM and OEM services are available, but no new products were developed in the past year and no SDK is available. Quality assurance is reported, while finished products are checked by packing staff. Service-management documentation is weak: no written procedures or records are reported for supplier-service assessment, corrective actions, or complaint handling. The supplier has no overseas warehouse, showroom, agent, branch, or offline trade-show participation, and reports zero countries with overseas services. Financial capacity is represented only by year labels, without sufficient performance details. Customer locations are described as worldwide, but specific customer cases are not provided.
Supplier typeThe supplier is explicitly identified as a factory and a limited company, with 11 employees and associated companies. It also holds a valid import/export license, supporting its ability to conduct international trade.
After-Sales capabilityThe supplier states that it provides pre-sales, in-sales, and after-sales service, but reports no written procedures or records for service assessment, corrective and preventive actions, or complaint handling. It also has no overseas warehouse, showroom, agent, or branch, which limits demonstrated overseas service infrastructure.
R&D capabilityThe supplier reports no new products in the past year and no available SDK. Although ODM service is available, the explicit absence of recent new-product development and SDK capability indicates limited demonstrated innovation resources.
Production capacityThe supplier identifies cutting, bending, shearing, milling, gantry machining-center, and CNC machining-center facilities, and states that it offers eight product series and more than 100 models. It reports peak- and off-season lead times within 15 working days and has 11 employees, providing evidence of operating production capability, although capacity scale is not fully documented.
Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization. Its stated ODM capability further supports the availability of design-related customized manufacturing services.
Product Q&A
Q:Do you provide after-sales service overseas?
A:
Yes, we have partnered service centers in key regions.
Q:Can I request a customized bucket size?
A:
Absolutely! We offer tailored attachments.
Q:What documents do you provide for export?
A:
Full export package (Commercial Invoice, Packing List, Bill of Lading, etc.).
Q:How do I place an order?
A:
Contact us via email/phone for a quote, then confirm with a PO.
Send Inquiry
*To:
Henan Dajia Mining Machinery Co., Ltd.
Henan Dajia Mining Machinery Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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