About STM

Wire forming and polymer coating from Qingdao

QINGDAO STM METAL AND PLASTIC PRODUCTS CO.,LTD — export supplier of coated wire parts to appliance and cold-chain OEMs.

Founded in 2021, STM operates a 6,000 m² plant in Jimo District, Qingdao — 40 km from Qingdao Port. We specialise in wire forming, resistance welding and PE/PVC/nylon/PP dip coating for fan guards, freezer baskets, refrigerator shelving and custom wire assemblies.

Our quality lab houses seven instruments including salt-spray, magnetic thickness and automatic colorimeter testing. We supply OEM programmes for Haier, Hisense, Aucma and other leading appliance brands.

General manager: 江恭宇. For sales enquiries contact our team at the details below.

Legal name
QINGDAO STM METAL AND PLASTIC PRODUCTS CO.,LTD
Founded
2021
Plant area
6,000 m²
Location
Chenzhihui Road, Longshan Street, Jimo District, Qingdao, Shandong, China
STM factory courtyard, Jimo District, Qingdao

Capabilities

From wire to coated part, on one site

6,000 m² in Jimo District, Qingdao — wire forming, resistance welding, dip coating and stainless fabrication under one roof, 40 km from Qingdao Port.

One site, eight stages — wire to container

  1. 01 Wire in Low-carbon & stainless rod, checked to spec on arrival.
  2. 02 CNC forming Automated bending to your drawing, first-off verified.
  3. 03 Welding Resistance & projection welding on in-house jigs.
  4. 04 Pre-treatment Cleaning and priming for coating adhesion.
  5. 05 Coating PE / PVC / nylon dip or epoxy powder, sampled through the run.
  6. 06 Curing Controlled ovens set film hardness and finish.
  7. 07 QC & salt-spray Thickness, colour and ASTM B117 before release.
  8. 08 Pack & export Cartoned and caged, 40 km from Qingdao Port.
Wire forming & welding

Wire forming & welding

CNC wire bending, resistance welding and fixture assembly. Dies and jigs stay in-house for faster sample turnaround (typically 7–14 days).

PE / PVC / nylon / PP dip coating

PE / PVC / nylon / PP dip coating

Automated pre-treatment, dip coating and curing for uniform finish on freezer baskets, fan guards and shelving.

Epoxy powder coating

Epoxy powder coating

Powder preparation and curing for high-temperature and corrosion-resistant finishes on cooking racks and HVAC grilles.

Tooling on site

Tooling on site

Moulds, dies and jigs stored next to the line. Drawing review typically 1–3 days; tooling build 2–4 weeks.

Batch production & packaging

Batch production & packaging

Scheduled runs with in-process inspection. Film-wrapped stacks, carton warehouse and cage dispatch ready for export.

In-house quality lab

In-house quality lab

Seven QC instruments on the floor — see our Quality & Testing page for the full list.

Quality & Testing

The plant

6,000 m² in Jimo — 40 km from Qingdao Port

Chenzhihui Road, Longshan Street, Jimo District, Qingdao. Courtyard, forming cells, dip line, warehouse and export cages.

Plant courtyard · Longshan Street, Jimo
Plant courtyard · Longshan Street, Jimo
Wire forming & welding
Wire forming & welding
Dip coating line
Dip coating line
Powder shop
Powder shop
Finished-goods store
Finished-goods store
Carton warehouse
Carton warehouse
Cages packed for dispatch · STM / 圣泰铭
Cages packed for dispatch · STM / 圣泰铭
WhatsApp