Sunbow Insulation Materials Mfg. Co., Ltd.

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Homepage as rendered on 2026-07-25 — click to open the live site.

average across 88 audited Hoses, Seals & Rubber Parts suppliers

Data source: FactoryBase AI site audit · swept 2026-07-23

Registered capital

CNY 1.00M
≈ $140K

Legal representative

周祖海

Operating status

Active

Affiliated companies

1

Administrative penalties

None on public record

Unified social credit code: 91440300680399827NRegistration no.: 91440300680399827N

Data source:· swept 2026-07-23

Sunbow manufactures a wide range of high-quality insulation tubes and sleeves for electrical and industrial use, including fiberglass sleeving and expandable sleeves, heat-shrinkable tubes, corrugated pipes, PVC tubes, silicone rubber tubes, PTFE/FEP/PFA/PVDF tubes, and other special tubing such as polyimide film sleeves.

Factory video ↗

Data source: Company websitecompany-published· swept 2026-07-25

Patents

60 patents

Export markets

Europe, United States, Canada, Globalcompany-stated

Data source:· swept 2026-07-23

Data source: Company website · swept 2026-07-25

Web-presence grading is rolling out across this category (88/96 graded so far). See the full Hoses, Seals & Rubber Parts ranking ↗

Data source: FactoryBase category index · 96 profiled suppliers

Other suppliers profiled in the same category — compare before you commit.

Data source: FactoryBase category index

Is Sunbow Insulation Materials Mfg. Co., Ltd. a factory I can order from directly?

Yes. It is profiled as a manufacturer from its registered business scope, which covers R&D, production and sales of glass fiber sleeves, silicone tubes, PTFE tubes, PVC tubes, heat-shrink tubes and related insulation products. The company has been active in Shenzhen since 2008 with 40 people on social-insurance records and no administrative penalties on public record.

What products does Sunbow describe itself as making?

In its own marketing copy the company states that it manufactures insulation tubes and sleeves for electrical and industrial use, including fiberglass sleeving, expandable sleeves, heat-shrinkable tubes, corrugated pipes, PVC tubes, silicone rubber tubes, PTFE/FEP/PFA/PVDF tubes and polyimide film sleeves. These items align with the production activities listed in its registered business scope.

What certifications and awards does Sunbow claim?

The company states that it holds UL, ISO9001:2015, IATF16949:2016, RoHS and REACH certifications and lists a CSA award. All of these remain company-stated rather than independently verified in the available data.

What should a buyer watch out for?

The primary website is not in English and its content appears not to have been updated since 2022. Independent customs and shipment records are not yet verified, so claimed export volumes and named buyers cannot be confirmed from public sources.

How does Sunbow compare in size and age to other Hoses, Seals & Rubber Parts suppliers in China?

Its registered capital of CNY 1 million (about US$140 K) is higher than only 9% of peers, placing it among the smaller suppliers in the category of 96 profiled firms. It is older than 51% of other Hoses, Seals & Rubber Parts suppliers in China and belongs to the Hoses, Seals & Rubber Parts suppliers in Shenzhen cluster.

Which export markets does the company claim?

Sunbow states that it serves Europe, the United States, Canada and global markets. Independent customs records are not yet verified, so actual shipment volumes and destination buyers remain unconfirmed.

What's the bottom line for a buyer considering Sunbow Insulation Materials Mfg. Co., Ltd.?

It is an active Shenzhen manufacturer founded in 2008 with a clear production scope for insulation tubing, 40 employees on payroll records and no public penalties, yet it ranks among the smaller Hoses, Seals & Rubber Parts suppliers in China by capital and sits in the mid-range for age. Buyers should treat its listed certifications and export markets as company-stated, note the non-English website last refreshed in 2022, and remember that customs records are not yet verified.

How was this profile built — can I trust it?

Yes — it is compiled independently by our AI from dated, public evidence: business registries (via grok), an automated website audit, and Sunbow Insulation Materials Mfg. Co., Ltd.'s own site — not from anything the company submitted. Where Sunbow Insulation Materials Mfg. Co., Ltd. states something about itself, we show it beside the public record, so you are reading sourced facts, not marketing.