STAL GROUP · MANUFACTURING

OEM & Private Label Filter Manufacturing

Build your filter range with STAL Group. Choose customer branding on existing non-exclusive products, or ask our engineers to assess a custom filter requirement.

Send OEM requirements

Two manufacturing sites. Product-specific review. Branding, packaging and engineering support.

STAL manufacturing site in Longquan
Zhejiang Santian (STAL) manufacturing site in Longquan.

TWO WAYS TO WORK WITH US

Brand an existing filter. Or develop to your requirements.

01 · Existing-product private label

All non-exclusive filters in the group range can be supplied with customer-specific shell printing, labels, colour boxes or outer cartons.

Please send:

  • Required part numbers and quantities
  • Brand artwork and marking details
  • Label, individual-box and outer-carton requirements
  • Destination and any packing instructions

02 · Custom filter assessment

Send a sample, drawing or specification. We assess filter media, dimensions and construction against your application and requirements.

Sales collects the brief. Engineers assess feasibility, identify issues and suggest improvements. We then agree sample approval and production conditions with you.

MOQ and lead time are confirmed by product, order quantity and actual production scheduling.

FROM BRIEF TO PRODUCTION

A clear review and approval process

  1. Share the requirement. Provide part numbers, quantities, artwork, samples, drawings or specifications as relevant.
  2. Review with the right team. Sales coordinates the brief; engineers assess custom requirements and clarify technical issues.
  3. Confirm the sample and conditions. Agree the product, branding, packaging, MOQ and production arrangements before proceeding.
  4. Manufacture to the confirmed order. The manufacturing site, schedule and delivery arrangement are confirmed for the order.

TWO FACTORIES · ONE GROUP

Zhejiang Santian and Zhejiang Lifeng

STAL · Zhejiang Santian

Zhejiang Santian and Zhejiang Lifeng (LEFONG) are both part of STAL Group. Both factories support the group’s filter product range.

Santian’s strengths are its established equipment and mature production processes.

LEFONG · Zhejiang Lifeng

LEFONG can offer more flexible delivery arrangements for some orders, depending on the order requirements and the actual production schedule.

Our team confirms the appropriate manufacturing and delivery plan for each order.

REAL MANUFACTURING STEPS

Branding, assembly and production equipment

Filter marking equipment at the LEFONG manufacturing site
Marking equipment at the LEFONG manufacturing site.

Product marking

Agree the shell printing, label artwork and packaging details for the selected non-exclusive filter.

Filter assembly and packing work area at the STAL manufacturing site
Assembly and packing work area at the STAL site.

Assembly and packing

Products are prepared against the confirmed brand, part number and packing requirements.

Production line equipment at the LEFONG manufacturing site
Production line equipment photographed at LEFONG.

Progressive automation

Automation is introduced progressively into selected production steps. The process and arrangements relevant to your order are confirmed during review.

SEND YOUR REQUIREMENTS

Start an OEM project

Upload a CSV or XLSX parts list, PDF drawing, or product photo (up to 10 MB). Include the requested brand, part numbers, quantities and destination. Our team will review your requirements.




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    The automatic email confirms receipt only. Pricing, substitutions, custom feasibility and delivery are confirmed by our sales or engineering team.