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Nanjing Huaqing Rubber and Plastic Products Co., Ltd.

Diory Product Brand

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Since 1952 · Industrial Hose Manufacturing

Industrial, Hydraulic & Specialty Hose Supply Solutions

Nanjing Huaqing Rubber and Plastic Products Co., Ltd. manufactures hydraulic hose, industrial hose, suction and discharge hose, and a range of specialty hose products under the Diory brand for construction machinery, mining, petroleum, chemical, automotive, and industrial fluid-transfer applications.

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Founded

1952

Long-cycle manufacturing background

Annual Capacity

35M+ m

Braided, spiral, suction and discharge lines

Employees

423

Including 55 technical quality staff

Trust

Focused on product selection and purchasing needs

The homepage explains what the company makes, where the products are used, and what information customers usually need before asking for a quotation.

National-level technical capability

The company profile references national enterprise technology center recognition, advanced equipment, and long-term investment in hose R&D.

Broad industrial hose portfolio

Product families cover braided hydraulic hose, suction and discharge hose, fuel transfer, material handling, and other demanding industrial service lines.

Export-oriented buyer support

Existing export references include Japan, Germany, the United States, the United Kingdom, and South Korea, showing experience in supporting overseas industrial customers.

Products

Representative product lines for the first release

These pages highlight the first group of representative hose products now available on the site.

Industrial Hose Featured
Chemical Suction & Discharge Hose

Chemical Suction & Discharge Hose

Flexible chemical suction and discharge hose for acids, alkalis, solvents, and other corrosive liquids.

Working Pressure
150 psi / 10 bar
Temperature Range
-40°C to +120°C
View Details Request Quote
Industrial Hose Featured
Steam & Hot Water Hose

Steam & Hot Water Hose

EPDM steam and hot water hose for industrial cleaning, cooling systems, and related heated-fluid transfer.

Working Pressure
150 psi / 10 bar
Temperature Range
-40°C to +150°C
View Details Request Quote
Industrial Hose Featured
Tank Truck Hose

Tank Truck Hose

Heavy-duty anti-static suction and discharge hose for petroleum transfer on tank trucks and tank vessels.

Working Pressure
150 psi / 10 bar
Temperature Range
-40°C to +80°C
View Details Request Quote
Categories

Structured around real industrial demand

The information architecture groups products by evaluation logic instead of internal factory organization.

Hydraulic Hose

Compact braided, oil delivery, and suction/discharge series for machinery hydraulic systems and return-line conditions.

Industrial Hose

Chemical, steam, fuel, tank truck, and general transfer lines for factories, mobile equipment, and fluid transport.

Material Handling Hose

Sand blast, dry cement, and abrasive media hose lines designed around wear resistance and on-site handling demands.

News

Technical content that supports product selection

Industry articles and selection guidance help customers prepare clearer product requirements before they contact the sales team.

3/7/2026 Hydraulic

Using the STAMPED Method to Clarify Hose Selection Requirements

A content structure built around key parameters helps overseas customers move from catalog browsing to a clearer product inquiry.

Read Article
3/5/2026 RFQ

How to Prepare a Clear Quote Request for Hydraulic Hose Projects

A better quote request starts with operating pressure, temperature, medium, and fitting details before brand or price discussion.

Read Article
Company

Company and website overview

Nanjing Huaqing Rubber and Plastic Products Co., Ltd. combines long-term manufacturing experience with the Diory product brand so customers can understand the hose range, typical applications, and inquiry channels before direct contact.

Manufacturing profile

What buyers usually need to verify before they engage

These profile blocks convert current company materials into reusable trust content. They are ready to be upgraded as soon as verified photos, certificates, and internal numbers are finalized.

Factory profile Changyang Industrial Park, Jiangshan Town, Laixi, Qingdao

Changyang Industrial Park Manufacturing Base

Seed profile for the main manufacturing site referenced in company history and profile materials. Use this entry to anchor future factory overview pages, gallery sections, and capability summaries.

Founded origin
1952

Company history traces back to Qingdao Sixth Rubber Factory of the Ministry of Chemical Industry.

Current site area
113390 m²

Figure referenced in the company profile materials.

Registered capital
CNY 80M

Seed value from profile OCR summary pending direct source reconfirmation.

  • Company history materials state the production base moved to Changyang Industrial Park in 2004.
  • Profile copy positions the site as the base for high, medium, and low pressure hose manufacturing.
  • This entry should later be paired with exterior, workshop, warehouse, and loading photos.
Factory profile Export sales and production coordination baseline

Export Delivery and Capacity Support

Seed profile for buyer-facing trust messaging around export experience, production scale, and response capability.

Annual capacity
35M+ m

Current homepage uses this as the public operating baseline.

Referenced export markets
5+ priority markets

Japan, Germany, the United States, the United Kingdom, and South Korea are explicitly referenced.

Product scope
Hydraulic, industrial, suction/discharge, specialty hose

Scope aligned with current product and homepage structure.

  • Existing trust copy already references overseas industrial customer support experience.
  • This entry should later be backed by shipment photos, packaging standards, and export documentation workflow.
  • Future verified content can split this seed profile into separate logistics, packaging, and export compliance modules.
Factory profile Qingdao production and quality organization

Quality and Engineering Team Structure

Seed profile capturing the technical staffing and quality-system positioning already used in the current homepage trust copy.

Employees
423

Current public trust copy already references this headcount.

Technical and quality staff
55

Referenced in the OCR profile summary.

Senior engineers
5

Referenced in the OCR profile summary.

  • Company materials emphasize long-term investment in technical development and product research.
  • Advanced testing equipment is referenced as part of the quality-assurance system.
  • This entry should later be supported by lab photos, key test equipment list, and QC workflow visuals.
Application scenarios

Common request patterns the RFQ flow is designed to capture

These are scenario-based case seeds rather than named customer stories. They help translate the existing product data into buyer-side use cases and highlight what information the sales team still needs from the customer.

Application scenario Industrial fluid transfer and tank unloading

Chemical Transfer Specification Review

Seed application case for RFQ flows where the buyer must clarify media compatibility, vacuum conditions, and fittings before quotation.

Challenge

Chemical-transfer inquiries usually fail when the first contact does not define medium, vacuum requirement, hose size, fittings, and target market clearly enough.

Response

The current static RFQ flow captures seeded product context, pressure, market, and free-text technical details so the commercial team can review chemical hose suitability before quoting.

Outcome

This seed case should be replaced with a verified example after the team collects one publishable project with approved details and outcome metrics.

chemical-suction-discharge-hosetank-truck-hose
Application scenario Construction equipment aftermarket

Construction Machinery Hydraulic Line Selection

Seed application case for buyers comparing compact braided hydraulic hose options for replacement and sourcing programs.

Challenge

Buyers need a fast way to compare compact one-wire and two-wire braided hose for higher-pressure hydraulic circuits while keeping installation space constraints clear from the first inquiry.

Response

The current site structure pairs compact braided product pages with RFQ shortcuts, technical tables, and basic trust signals so the buyer can shortlist the right series before the sales discussion.

Outcome

Suitable as a future verified case-study template once real distributor or OEM replacement program details are available.

compact-one-wire-braided-hosecompact-two-wire-braided-hose
Application scenario Bulk material handling and site service fleets

Dry Bulk Transfer Hose Shortlist for Cement Service

Seed application case for buyers screening abrasive media hose options for cement, lime, and similar dry transfer jobs.

Challenge

Buyers often need to compare dry cement hose and adjacent abrasive-service lines quickly, but final selection depends on wear resistance, internal diameter, operating pressure, and field handling conditions.

Response

The current content model separates product parameters, application description, and RFQ context so a buyer can submit a more complete request before sales recommends a final hose specification.

Outcome

Ready to become a verified case once real delivery volumes, site conditions, and replacement cycle data are available from operations or customer interviews.

dry-cement-hosesand-blast-rubber-hose
Inquiry support

Share your requirements before quotation

If product family, medium, pressure, temperature, fittings, and target market are explained clearly at the start, the sales team can recommend a more suitable hose solution and quotation more quickly.

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