Looking for explosion-proof electrical manufacturers in Yueqing and Wenzhou? This guide profiles nine companies based in Yueqing and one in Wenzhou’s Longwan District. Their published ranges cover Ex lighting, distribution and control boxes, operator stations, junction boxes, cable entries, fans, plugs and sockets, and related components. Start with the hazardous-area classification and the exact product function, then compare companies that publish the relevant construction and model documentation.
TORMIN is included at the request of the publisher but is not a Yueqing company. Its official address is in Longwan District, Wenzhou. The other nine entries are Yueqing-based according to their published contact or company pages. This distinction matters when planning a factory visit and when checking where the offered model is manufactured.
How this list was selected: Official company, contact and product pages were reviewed on 22 October 2026. The order is a research shortlist, not a quality, price, certification, export or “best” ranking. A published address, product range or certificate library does not prove that BottomRace has audited every factory or that every model carries every approval. Confirm the legal entity, manufacturing site, exact configuration, current certificate and marking before ordering.
Ten explosion-proof electrical manufacturers to compare
Use the location column to separate Yueqing suppliers from the Wenzhou entry. Then send every shortlisted company the same area classification, electrical schedule and document requirements so that the replies can be compared on equal terms.
| Manufacturer | Location | Published Ex focus | Useful first question |
|---|---|---|---|
| TORMIN | Wenzhou / Longwan | Explosion-proof lighting, control stations, boxes and cable entries | Which exact model and area classification? |
| Helon Explosion-Proof Electric Co., Ltd. | Yueqing | Explosion-proof distribution, control, lighting and Ex components | Which enclosure, gas group and certificate? |
| Shenhai Explosion-Proof Technology Co., Ltd. | Yueqing | Ex lighting, distribution boxes, junction boxes, fans and fittings | Which hazardous-area rating and model document? |
| Zhejiang Yuxuan Explosion-Proof Electric Co., Ltd. | Yueqing | Ex switches, buttons, control boxes, signal lights and buzzers | Which control function and component certificate? |
| Yueqing Chengyang Electric Co., Ltd. | Yueqing / Liushi | Ex control boxes, operation posts, sockets, lights and fittings | Which complete assembly and Ex configuration? |
| Zhejiang Furen Explosion-Proof Electric Co., Ltd. | Yueqing / Beibaixiang | Ex lighting, electrical equipment, all-plastic products and fittings | Which series and Chinese technical document? |
| Yueqing Tengda Explosion-Proof Electric Co., Ltd. | Yueqing / Liushi | Pressurised panels, operation posts, Ex switches, bells and fittings | Which legacy model and current document? |
| Zhejiang Guozhong Explosion-Proof Electric Co., Ltd. | Yueqing / Liushi | Ex distribution, control, inspection, socket and instrument boxes | Which custom box and component schedule? |
| Zhejiang Haizhe Explosion-Proof Technology Co., Ltd. | Yueqing / Liushi | Ex distribution boxes, pressurised cabinets and control stations | Which IP, gas group and assembly rating? |
| Zhejiang Guanghong Explosion-Proof Electric Co., Ltd. | Yueqing / Liushi | Ex inspection, control and distribution boxes plus lighting and fittings | Which dust or gas rating for the custom box? |
Manufacturer profiles and questions to ask
1. TORMIN
Legal name: Zhejiang Tormin Electrical Co., Ltd.
Published location: Wenzhou / Longwan
TORMIN is a Wenzhou-based industrial and explosion-proof lighting manufacturer, not a Yueqing company. Its official site gives the company address as No. 2 Gangteng Road, Yongxing Subdistrict, Longwan District, Wenzhou, and states that the business was established in 2003. The explosion-proof catalogue covers fixed, portable and emergency lighting, while the electrical-equipment range includes junction boxes, cable glands, control stations and emergency power supplies. The site also publishes model-specific ATEX and IECEx document groups. Use the location and certificate scope for the exact product you are buying rather than treating the company's overall range as one approval.
Before requesting a quote: Send the hazardous-area classification, gas or dust group, temperature class, required equipment protection level, ambient temperature, supply and mounting conditions. Ask for the exact model and configuration, the certificate naming that model, the marking, installation instructions and production address. For lighting, add the lighting target, mounting height and emergency duration; for electrical equipment, add circuit ratings, cable entry, enclosure material and required IP rating.
Official sources: Explosion-proof lighting · Explosion-proof electrical equipment · Certification documents · contact page.
2. Helon Explosion-Proof Electric Co., Ltd.
Legal name: Helon Explosion-Proof Electric Co., Ltd.
Published location: Yueqing
Helon presents itself as a Yueqing explosion-proof electrical manufacturer and publishes a broad range of distribution boxes, control stations, junction boxes, lighting, ventilation products, stainless-steel and all-plastic families, and Ex components. Its product pages identify selected distribution and junction-box families by gas group, including IIB, IIC and dust-related IIIC references. The company also describes ATEX and IECEx management systems and an in-house testing centre. Those company-level statements are useful background, but the buyer still needs the certificate and marking for the precise enclosure and configuration.
Before requesting a quote: Define the enclosure function, rated voltage and current, number of ways, control devices, terminal arrangement, cable entries and installation environment. State the zone or division, gas or dust group, temperature class and required EPL. Ask for the exact model drawing, enclosure material, flameproof joint details, sealing arrangement, certificate scope, nameplate text and production site.
Official sources: Product centre · Company profile · contact page.
3. Shenhai Explosion-Proof Technology Co., Ltd.
Legal name: Shenhai Explosion-Proof Technology Co., Ltd.
Published location: Yueqing
Shenhai publishes explosion-proof lighting, distribution boxes, junction boxes, plugs and sockets, push-button stations, fans, conduit outlet boxes and pipe fittings. Its official footer gives the address as No. 318, Wei 15 Road, Yueqing Economic Development Zone, Wenzhou. Product pages show Ex markings and technical fields for selected models, including gas and dust protection references, temperature classes and IP ratings. The site describes the company as a manufacturer founded in 2001. Buyers should check the current certificate and instruction for the exact model rather than relying on a category badge or a general ATEX/IECEx claim.
Before requesting a quote: Provide the area classification, gas or dust group, temperature class, EPL, ambient range, enclosure function and cable-entry requirements. Ask for the model-specific certificate, marking, rated data, materials, dimensions, installation manual and production address. For a distribution or control assembly, send the electrical schematic and specify every component that affects the Ex rating.
Official sources: Official home page · contact page.
4. Zhejiang Yuxuan Explosion-Proof Electric Co., Ltd.
Legal name: Zhejiang Yuxuan Explosion-Proof Electric Co., Ltd.
Published location: Yueqing
Zhejiang Yuxuan, which uses the YXFB identity online, states that it was founded in 2010 and publishes explosion-proof switches, buttons, boxes, signal lights, buzzers and potentiometers. Its contact page gives No. 12 Yonghe 1st Road, Chengdong Functional Industrial Park, Chengdong Street, Yueqing. The site describes product design, mould development and assembly for control components and boxes. This makes the company relevant when a buyer needs a local source for operator interfaces rather than only large distribution assemblies. Verify the exact component, contact block, enclosure and certificate as one compatible configuration.
Before requesting a quote: Specify the operator function, number of contacts, contact type, rated voltage and current, enclosure material, cable entry and mounting. State the zone, gas or dust group, temperature class and required EPL. Ask for the model-specific certificate, marking, dimensional drawing, contact arrangement and installation instructions. For an assembled control station, identify every component and the party responsible for the final assembly.
Official sources: Company profile · Contact details · contact page.
5. Yueqing Chengyang Electric Co., Ltd.
Legal name: Yueqing Chengyang Electric Co., Ltd.
Published location: Yueqing / Liushi
Yueqing Chengyang Electric publishes an explosion-proof product category that includes control boxes, plug-and-socket devices, operation posts, lighting and power distribution boxes, control buttons, junction boxes, portable lights and audible-visual alarms. The contact address is No. 555 Chezhan Road, Liushi Town, Wenzhou. Its wider catalogue also covers circuit breakers, contactors, switchgear and transformers, so the explosion-proof range should be selected as a separate technical scope. The product names and series references are a starting point; the final quotation should identify the complete assembly and the Ex documents that cover it.
Before requesting a quote: Send the electrical schematic, function of each control or socket, rated voltage and current, number of entries and required enclosure material. State the hazardous-area classification and required Ex protection concept. Ask for the exact assembly drawing, component list, model-specific certificate, marking, nameplate and production site. Confirm whether the quoted item is a complete factory-built assembly or a set of components for local assembly.
Official sources: Explosion-proof product category · Company home page · contact page.
6. Zhejiang Furen Explosion-Proof Electric Co., Ltd.
Legal name: Zhejiang Furen Explosion-Proof Electric Co., Ltd.
Published location: Yueqing / Beibaixiang
Zhejiang Furen Explosion-Proof Electric publishes explosion-proof lighting, electrical equipment, all-plastic products and conduit fittings from its base in Shuanghuanglou Industrial Zone, Beibaixiang, Yueqing. Product examples include LED floodlights, junction boxes, control cabinets, wiring boxes, flexible conduits and operation posts. The website is primarily Chinese, so an overseas buyer should allow time for translation and compare the Chinese model description with the English quotation. The company describes production to Chinese explosion-proof standards; the applicable certificate and marking still need to be checked for the exact model and destination market.
Before requesting a quote: Provide the Chinese and English function description, area classification, gas or dust group, temperature class, EPL, voltage, current, enclosure material and cable entry. Ask for the Chinese model number with an English explanation, the current certificate, nameplate wording, installation manual and production address. Confirm whether the document is a product certificate, a test report or a company-system certificate.
Official sources: Company profile · Contact details · contact page.
7. Yueqing Tengda Explosion-Proof Electric Co., Ltd.
Legal name: Yueqing Tengda Explosion-Proof Electric Co., Ltd.
Published location: Yueqing / Liushi
Yueqing Tengda Explosion-Proof Electric describes itself as a manufacturer of pressurised distribution panels, operation posts, lighting switches, cord switches, electric bells, plugs and sockets, alarm buttons, fluorescent luminaires and projection lights. Its English contact page gives Changhong Industrial Zone, Liushi, Yueqing, and the About page states that the company was founded in 1997. The English website is dated and contains spelling and translation errors, including 'YENQING' in the company banner. Treat the site as an introduction, then obtain a current quotation, drawing and certificate package directly from the company.
Before requesting a quote: Send the process conditions, area classification, required protection concept, electrical ratings and control sequence. Ask for a current English and Chinese model list, the exact drawing, certificate and marking for the offered version, and confirmation of the legal company name and production address. For a pressurised panel, include the purge and pressurisation control, alarm logic, air supply and failure procedure in the technical review.
Official sources: Company profile · Product introduction · contact page.
8. Zhejiang Guozhong Explosion-Proof Electric Co., Ltd.
Legal name: Zhejiang Guozhong Explosion-Proof Electric Co., Ltd.
Published location: Yueqing / Liushi
Zhejiang Guozhong Explosion-Proof Electric states that it was established in December 2017 and publishes more than 150 series across explosion-proof distribution, control, junction, inspection, socket, instrument, starting and variable-speed boxes. Its range also includes operation posts, switches, buttons, starters, plugs, air conditioners, fans, lighting and conduit accessories. The official contact page gives Huangshe Road 51, 53, 55 and 57, Liushi Town, Yueqing. The breadth is useful for custom assemblies, but a custom enclosure needs a controlled electrical schematic, component list and Ex assessment rather than a catalogue name alone.
Before requesting a quote: Provide the single-line diagram, enclosure function, incoming and outgoing circuits, component list, rated data, terminal arrangement, cable entries and installation environment. State the zone, gas or dust group, temperature class and EPL. Ask for the general assembly drawing, nameplate, component certificates, routine test records, Ex certificate covering the final assembly and the production site.
Official sources: Company profile · Contact details · contact page.
9. Zhejiang Haizhe Explosion-Proof Technology Co., Ltd.
Legal name: Zhejiang Haizhe Explosion-Proof Technology Co., Ltd.
Published location: Yueqing / Liushi
Zhejiang Haizhe Explosion-Proof Technology states that it was founded in 2012 and publishes explosion-proof distribution boxes, pressurised cabinets, operation posts, control boxes, junction boxes, installation accessories, conduit fittings, fans and lighting. Its English company profile says it is based in Liushi Town, Yueqing. The contact page gives Qiligang Industrial Zone, Shangpu First Road No. 77, Liushi. Product listings distinguish IIB and IIC families and include stainless-steel and carbon-steel enclosures. The catalogue structure is useful, but the buyer should not infer a common certificate across every enclosure material or custom circuit.
Before requesting a quote: Specify the enclosure type, material, number of ways, electrical ratings, components, cable entries and required IP rating. State the zone, gas or dust group, temperature class and EPL. Ask for the exact model drawing, certificate and marking, material certificate, component list, routine tests and the address where final assembly takes place.
Official sources: Product centre · English company profile · contact page.
10. Zhejiang Guanghong Explosion-Proof Electric Co., Ltd.
Legal name: Zhejiang Guanghong Explosion-Proof Electric Co., Ltd.
Published location: Yueqing / Liushi
Zhejiang Guanghong Explosion-Proof Electric publishes explosion-proof inspection boxes, combined control boxes, lighting and power distribution boxes, pump and fan control boxes, stainless-steel enclosures, variable-frequency control cabinets and dust-protection products. Its contact page gives Changdaotan Village, Liushi Town, Yueqing. Product titles include references to IIC, T4, T6 and DIPA21 dust protection, showing why the exact hazardous-area requirement must be stated before a model is chosen. The company's own site describes a 2020 founding date; the buyer should still verify the legal entity and production address in the quotation.
Before requesting a quote: State whether the application involves gas, combustible dust or both, then provide the zone, group, temperature class or dust temperature reference and required EPL. Send the schematic, load schedule, enclosure material, cable entries and IP requirement. Ask for the model-specific certificate and marking, flameproof joint and sealing details, component list, nameplate and production site.
Official sources: Product centre · Company profile · contact page.
Specify the hazardous area and the exact product
Explosion protection is not a single product label. The required protection concept depends on the atmosphere, zone or division, gas or dust group, temperature class, equipment protection level and installation conditions. The enclosure, circuit, cable entries and accessories must be assessed as a compatible assembly.
| Include in your enquiry | Ask the supplier to confirm |
|---|---|
| Area and atmosphere | Zone or division, gas or combustible dust, gas group or dust group, temperature class or dust temperature reference, ambient range and outdoor or corrosive conditions. |
| Protection concept | Required Ex method such as Ex d, Ex e, Ex i, Ex t or pressurisation, together with the equipment protection level and any special conditions of use. |
| Product function | Complete electrical schematic or single-line diagram, control sequence, load schedule, number of ways, operator functions and interfaces with other equipment. |
| Enclosure construction | Material and grade, dimensions, wall thickness, flameproof joint dimensions where applicable, gasket or sealing arrangement, hinges, fasteners and corrosion protection. |
| Cable entry and termination | Entry thread, quantity and direction, cable type and diameter, glands, stopping boxes, armour or shield bonding, terminal ratings and minimum clearances. |
| Model-specific certificate | Certificate number and issue status, exact model and variants covered, marking, special conditions, certificate holder and manufacturing location. |
| Components | Certificates or suitability evidence for breakers, contactors, terminals, lamps, batteries, fans and other components that affect the final assembly. |
| Temperature and IP | Temperature class, ambient rating, surface-temperature assumptions, IP rating, test basis and the effect of sunlight, enclosures or added components. |
| Marking and documents | Nameplate artwork, Ex marking, ratings, serial or batch identification, installation and maintenance instructions, declaration and routine test records. |
| Production and change control | Factory address, responsibility for final assembly, approved drawing revision, component substitution rules and notification before a design or supplier change. |
Do not treat a company certificate as a product certificate. An ISO 9001 certificate covers a management system. An ATEX or IECEx product certificate has a defined model scope and may include schedules and conditions of use. A test report can support a design without proving that a particular production unit is marked and documented correctly. Ask for the complete document package and check that the model, ratings and production responsibility match the quotation.
For a custom distribution or control assembly, send the final schematic before the enclosure is frozen. Adding a different breaker, terminal, cable gland, display or ventilation device can change the internal heating, spacing, wiring or protection concept. Record the approved component list and drawing revision so that a later substitution does not quietly change the delivered product.
What to inspect during an explosion-proof factory visit
A useful visit follows the actual production route and checks the features that control safety, not only the showroom. Confirm in advance which operations are performed at the proposed site and which are outsourced.
- Incoming material and identification: review how enclosure castings, plates, bars, seals and purchased components are identified, inspected and traced to the production batch.
- Casting and machining: inspect the condition of flameproof surfaces, joint dimensions, machining marks, porosity, thread quality and protection against damage during handling.
- Fabrication and welding: for larger boxes and cabinets, review plate cutting, bending, welding, cleaning and surface preparation before coating.
- Seals and assembly: check gasket storage, compression, cable-entry preparation, fastener control, torque instructions and protection of flameproof joints during assembly.
- Electrical build: compare the assembly with the approved schematic and component list, then review terminal spacing, wiring, labelling and component certificates.
- Testing: observe the routine checks used for the offered product, such as dielectric, insulation, continuity, functional, leakage or pressure tests where applicable.
- Marking and documents: compare the nameplate and Ex marking with the certificate, approved drawing and customer order. Check how instruction manuals and test records are packed.
- Change control: ask how the factory controls a new component, supplier, painting process, cable entry or model variant that could affect certification.
BottomRace coordinates electrical sourcing and purchasing in Yueqing. Pro: $0 separate service fee; procurement service costs are included in the product quotation. Basic: 5% of product value, with a minimum service fee of $100, for your existing Yueqing suppliers. Compare our Pro and Basic services. For on-site meetings, see our factory visit services. The quotation confirms the scope, inspections, payment terms and any additional costs.
Questions explosion-proof buyers often ask
Does an ATEX or IECEx logo on a website cover every product?
No. Product certification has a defined model scope, marking and often special conditions of use. Ask for the certificate that names the exact model or family and configuration you intend to buy. Check its current status, certificate holder, manufacturing location and any schedules that limit the permitted variants.
What is the difference between Zone and Division classification?
They are different systems used by different markets and project specifications. Zone-based classification is common in IEC and ATEX practice, while Division-based classification is used in North American practice. The product standard, marking and certification system must match the project’s required system and local acceptance rules. Do not convert a classification casually without the project’s responsible engineer.
What do Ex d, Ex e, Ex i and Ex t mean?
These letters describe different protection concepts. Ex d is flameproof enclosure, Ex e is increased safety, Ex i is intrinsic safety and Ex t is protection by enclosure for dust atmospheres. Selection depends on the equipment, circuit, environment and required EPL. A product may combine more than one concept, so read the complete marking rather than only the first letters.
Can I add my own breaker or cable gland to a certified enclosure?
Only within the conditions allowed by the certificate, product standard and manufacturer’s instructions. Components, internal heating, spacing, wiring and cable entries can affect the assembly. Send the proposed component list to the enclosure manufacturer and obtain written approval for the final configuration before production.
How should I compare quotations from several factories?
Use one technical schedule with the same area classification, electrical ratings, enclosure material, IP requirement, cable entries, documentation and test requirements. Require each quotation to state the exact model, approved drawing revision, certificate scope and production address. A low price is not comparable if one offer excludes glands, terminals, testing, documents or a certified final assembly.
Can BottomRace help arrange an explosion-proof factory visit?
Yes. Email your product requirements, hazardous-area classification, drawings, quantities and preferred dates to contact@bottomrace.com. We can agree the local coordination, interpretation and observation scope before arranging the visit.
Build your explosion-proof shortlist with local support
Send your area classification, electrical schedule, target models and required documents. We can discuss supplier enquiries and factory visits in Yueqing and Wenzhou.