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ABOUT ZEREN

Our Story: Building Precision Manufacturing Since 2009

Founded in Foshan, Guangdong, Zeren has grown from an investment casting manufacturer into an integrated supplier of custom cast and CNC-machined steel components.

We support drawing-based projects from early manufacturing review and tooling preparation through investment casting, CNC machining, finishing, inspection, and delivery coordination.

Send Us Your Drawing

$Molten steel being poured into ceramic shell molds at Zeren\'s investment casting foundry$

Zeren CNC machining workshop with operators and machining centers in Foshan

Who We Are

A Custom Manufacturing Partner for Drawing-Based Steel Components

Foshan Zeren Precision Casting Co., Ltd. was established in 2009 in Foshan, Guangdong, China.

We manufacture custom, non-standard steel components according to customer drawings, samples and technical requirements. Our core manufacturing system combines silica sol investment casting with CNC machining and coordinated secondary processing.

By managing multiple production stages within one connected project, we help customers reduce supplier handoffs and maintain better control over dimensions, material requirements, surface finishes and production consistency.

Factory Facts

Founded

2009

Core Process

Silica Sol Investment Casting

Location

Foshan, Guangdong, China

Manufacturing Support

Investment Casting and CNC Machining

How Zeren Has Evolved

Our development has been driven by the changing requirements of customer projects. As components became more complex, customers needed more than cast blanks—they needed machining, finishing, inspection and coordinated project support.

Workers pouring molten steel during investment casting production at Zeren

01-Investment Casting Foundation

Zeren began with a clear focus on silica sol investment casting for complex steel components requiring good surface quality, repeatable dimensions and flexible custom production.

Zeren CNC machining workshop supporting precision machining of custom steel castings

02-Expanded Machining Support

As more projects required precision bores, threads, sealing surfaces, mounting faces and assembly features, CNC machining became an important part of our manufacturing support.

Zeren workers inspecting and sorting a production batch of precision steel components

03-Integrated Project Manufacturing

Today, casting, machining, heat treatment, surface finishing, inspection, packaging and delivery coordination can be managed as one connected project around the customer’s drawing.

The Principles Behind Our Work

Drawing-Based Manufacturing

Every project begins with the customer’s drawing, material specification, tolerance requirements and intended application.

Practical Engineering

We focus on manufacturable solutions that balance casting feasibility, machining requirements, product performance and project cost.

Process Accountability

When an issue occurs, we trace it back to the related production stage, review the cause and improve the corresponding control method.

Long-Term Cooperation

We maintain production records, customer requirements and previous project experience to support repeat orders and continuous improvement.

Inside Our Manufacturing Facilities

Zeren operators producing and inspecting wax patterns for investment casting

Tooling & Wax Pattern Production

Operator applying ceramic slurry during investment casting shell production

Ceramic Shell Building

$Molten steel being poured into ceramic shell molds in Zeren\'s casting workshop$

Metal Melting & Pouring

Worker grinding and cleaning a steel casting after the investment casting process

Casting Cleaning & Finishing

CNC machine cutting a precision steel component with coolant applied

CNC Machining

Precision steel components and measuring instruments prepared for final quality inspection

Inspection & Final Verification

View Our Manufacturing Capabilities

People Behind Every Project

Every custom component requires coordination between engineering, production, machining, quality control and customer service.

Our teams work around the same drawing and project requirements, helping ensure that technical questions, production updates, inspection results and delivery arrangements remain connected throughout the project.

Discuss Your Project with Zeren

Our History & Milestones

2009 – Zeren Was Founded
- 1. Established in Foshan, Guangdong, with a focus on silica sol investment casting.
  2. Began manufacturing made-to-drawing steel components for industrial customers.
  3. Built the business around practical communication, consistent production, and long-term cooperation.
Early Development – Casting Processes Improved
- 1. Strengthened tooling, wax pattern, shell making, pouring, and post-casting process control.
  2. Expanded manufacturing experience across stainless steel, carbon steel, and alloy steel components.
  3. Improved dimensional consistency and production repeatability for custom orders.
Capability Expansion – CNC Machining Added
- 1. Extended project support from as-cast components to precision-machined parts.
  2. Added machining support for critical faces, bores, threads, holes, slots, and assembly features.
  3. Helped customers reduce the need to coordinate casting and machining with separate suppliers.
Quality Development – Inspection and Traceability Strengthened
- 1. Established an ISO 9001:2015-certified quality management system.
  2. Expanded inspection capabilities including CMM, spectrometry, hardness testing, and dimensional inspection.
  3. Improved material traceability, inspection records, and production documentation.
Integrated Manufacturing – From Drawing to Finished Part
- 1. Developed project support covering engineering review, tooling, casting, CNC machining, and final inspection.
  2. Coordinated heat treatment and surface finishing according to individual project requirements.
  3. Introduced a more structured process for samples, first articles, production approval, and batch delivery.
Today – A Reliable Custom Manufacturing Partner
- 1. Supports international customers with responsive communication and practical manufacturing feedback.
  2. Focuses on custom steel castings and machined components rather than standard catalogue products.
  3. Continues to improve process control, delivery reliability, and long-term project support.

Looking for More Than a Casting Supplier?

Send us your drawing, material requirements, quantity and application details. Our team will review the project and help determine the appropriate casting, machining and inspection approach.