SILICA SOL INVESTMENT CASTING · ONE-STOP SOLUTION

Your One-Stop Partner for
Customized Precision Castings

17 years of specialized precision casting and machining expertise. Silica sol lost-wax casting, precision machining and assembly delivered as one integrated package — complete solutions for complex casting projects worldwide.

A leading investment casting and precision machining foundry group in China.

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Quality · Higher Quality
Delivery · On-Time Delivery
Optimize · PDCA
Service · Better Service
2009
Group founded (July)
1000 t
Annual casting capacity
3g–130kg
Weight range per piece
±0.10 mm
As-cast tolerance
±0.015 mm
Machining accuracy
15 days
Sample lead time
90%+
Export ratio
OUR SERVICES

Four Core Services

The full chain from drawing to finished part — casting, machining, heat treatment, surface finishing and inspection all under one roof.

C

Investment Casting

Silica sol process castings in stainless steel, carbon steel, alloy steel, aluminum and nickel-based alloys. Surface finish to Ra 6.3, as-cast tolerances ±0.10mm.

  • 3g – 130kg per piece
  • OEM / ODM projects
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M

CNC Machining

4-axis and horizontal machining centers, accuracy ±0.015mm, finish tolerances to ±0.001". Turning, milling, drilling and tapping; bar stock supply available.

  • Complex parts, one setup
  • Turn-key, ready for assembly
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H

Heat & Surface Treatment

Annealing, normalizing, tempering, hardening, plasma nitriding; passivation, electro-polishing, blasting, phosphate coatings and more.

  • Mechanical testing included
  • Protective coatings available
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Q

Inspection & QA

X-ray (Grade A), HIP, magnetic particle, fluorescent penetrant, salt spray testing; CMM with automatic scanning for complex geometries.

  • ISO 9001:2015 certified
  • 100% conforming product goal
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OUR PROCESS

Silica Sol Investment Casting Process

Seven controlled core steps from wax pattern to finished casting — every checkpoint standardized, recorded and traceable.

1
Wax InjectionTemperature & pressure
controlled
2
Tree AssemblySecure welding
proper venting
3
Shell BuildingSilica sol multi-layer
fine first coat
4
DewaxSteam dewaxing
clean cavity
5
PouringMulti-alloy melting
spectral check
6
Cut & CleanCut-off, grinding
finishing
7
Machine & InspectCNC machining
full inspection
GROUP LAYOUT

The Group — One Order, One Responsible Partner

Headquarters handles market communication and technical solutions, the Qingdao base validates the process, the Liaoning base runs fully automated mass production, and final machining, assembly and testing return to Qingdao before delivery.

STEP 01

Front-End Solutions

HQ converts your requirements into technical solutions and quotes

STEP 02

Trial & Validation

Qingdao base: prototyping, process lock-in, small-batch delivery

STEP 03

Mass Production

Liaoning base: high-volume production + final machining & delivery

Group HQ · Est. July 2009

Qingdao OS Intelligent Technology Co., Ltd.

Founded September 2023
  • Group headquarters, overseas marketing hub, R&D and precision finishing center
  • Front-end communication, customized R&D, machining, assembly & testing
  • Deeply engaged in European and American markets via Qingdao's port advantages
Trial Base · Est. Feb 2018

Qingdao Excellent Metal Products Co., Ltd.

R&D trial-production & small-batch base
  • Precision casting process development, sample trial production
  • New product verification and iterative process optimization
  • High-end materials: stainless, duplex, heat-resistant & alloy steel
Mass-Production Base · Est. June 2024

Liaoning Excellent Metal Products Co., Ltd.

Large-scale mass-production base in Northern China
  • Fully automated silica sol investment casting lines (Kazuo, Chaoyang)
  • Standardized mass production of high-end castings
  • Stable, consistent casting blanks for high-volume, long-cycle orders
STANDARDS & MARKETS

Standards & Global Markets

ISO
ISO 9001:2015Certified quality management system
ISO
ISO 14001Certified environmental management system
IATF
IATF 16949Automotive quality management system
SMETA
SMETA CertifiedEthical trade & social compliance audit
United KingdomItalyGermany NetherlandsUSAJapan AustraliaPanamaMiddle East

Over 90% of products are exported to the countries and regions above

Have a Complex Casting Project?

From solid model to metal prototype in 15 days. Give us one chance, let us show you QDOS.

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