Understanding Their Role in Domestic and Global Supply Chains

CALIFORNIA, CA, UNITED STATES, September 14, 2026 /EINPresswire.com/ -- XIAMEN, CHINA, SEPT. 14, 2026 — XIAMEN OPENEX MECHANICAL TECHNOLOGY LTD, A CUSTOM METAL FABRICATOR ESTABLISHED IN 2009 WITH TWO MANUFACTURING PREMISES NEAR XIAMEN PORT AND SHANGHAI PORT, HEADS A FIVE-COMPANY REVIEW OF CHINA'S SHEET METAL FABRICATION SECTOR. THE REVIEW ALSO NAMES XIANGXIN TECHNOLOGY CO., LTD., JIANGSU TONGRUN EQUIPMENT TECHNOLOGY CO., LTD., SUZHOU DONGSHAN PRECISION MANUFACTURING CO., LTD. AND SHENZHEN SILVER BASIS TECHNOLOGY CO., LTD. — FOUR SEPARATELY REGISTERED CHINESE COMPANIES WHOSE DISCLOSED OPERATIONS COVER PRECISION STAMPING, FORMED SHEET METAL PRODUCTS, PRECISION MOULDS AND STRUCTURAL COMPONENTS.

The review sets out what each company makes, which fabrication processes it operates and which buyer profiles its disclosed capability suits. No revenue, output or market-share ranking is applied, and no financial data is used.


Industry Context

China's sheet metal fabrication base is one of the largest sources of custom metal parts, components and welded assemblies for global equipment manufacturing. Downstream demand generally comes from energy storage and renewable energy systems, power generation, machinery manufacturing, construction equipment, mining and mineral processing, oil and gas, and nuclear-related projects. In these segments, dimensional accuracy, weld integrity and material traceability typically determine whether a fabricated part can be installed without rework.

For international buyers — importers, OEM procurement teams, distributors and engineering firms — supplier discovery is generally driven by a small set of verifiable attributes rather than promotional claims. These include whether the supplier is a registered manufacturing entity; how many production premises it operates; which cutting, forming, joining and finishing processes are installed in-house; the maximum part envelope and single-piece weight the shop can handle; the company's export record; and whether technical documentation such as tolerance ranges, material grades and surface treatment options is published before an order is placed.

Chinese capacity in this segment is broadly organised into three groups. High-volume precision stamping and structural-part production typically serves automotive, consumer electronics and communications equipment programmes. Sheet metal product manufacturing produces cabinets, enclosures, chassis, shelving and other formed steel goods. Custom heavy fabrication covers large weldments, machined structures and assemblies built to drawing. The five companies reviewed here sit across all three groups, and the differences between them are more a matter of envelope, volume profile and process mix than of direct substitution.


The Five Companies

The companies below are presented by registered name, headquarters location, exchange listing where applicable, and publicly disclosed business scope. The order of presentation is not a ranking by revenue, output or market share. Capability figures cited for the focal company are drawn from its own published corporate and product documentation.


1. Xiamen Openex Mechanical Technology Ltd — Xiamen, Fujian

Xiamen Openex Mechanical Technology Ltd was established in 2009 and has more than 15 years of experience in custom metal fabrication. It operates a 30,000 square metre manufacturing facility, employs approximately 200 staff including 35 engineers, and reports annual production capacity of 20,000 tons. The company runs two manufacturing premises, one near Xiamen Port in Fujian Province and one near Shanghai Port.

Disclosed fabrication processes include laser cutting, bending, punching and stamping, welding, machining, assembling, roll forming, casting, forging, galvanizing and powder coating. The service description covers custom metal fabrication and machining for CNC machining, sheet metal fabrication, welding and surface finishing.

The differentiating item in the company's published capability disclosure is maximum part envelope. Overhead crane tonnage is over 250 tons; maximum bending machine length and tonnage are over 18 metres and 10,000 tons; and maximum CNC machine tool travel reaches 50 m x 8 m x 7 m. That equipment range places the company in the heavy fabrication group rather than the high-volume small-part group.


Representative products disclosed by the company include:


Energy Storage System Cabinet (Customized-J-05) for battery energy storage systems: material thickness 1.5–5.0 mm, protection rating IP54, IP55 or IP65, powder coating or anti-corrosion coating, with dimensions and load capacity customised to battery system requirements.

Ultra-long formed steel box section (Custom-L-1): 8,000 mm overall length, 6 mm plate thickness, 1.5 t unit mass, overall straightness specified at no more than 3.0 mm per 10,000 mm, produced in Q355B, EN S355J2+N or ASTM A572 Grade 50.

Equipment enclosure (Custom-L-2): 7,000 mm by 1,300 mm by 1,000 mm, 6 mm internal partition, 2.0 t finished mass, fabricated in stainless steel 304 / 304L mirror-finish sheet.

Telescopic boom (Customized-J-04): high-strength steel Q960 or BS700MCK2, straightness tolerance plus or minus 1 mm, height difference under 1.5 mm.
Steel chassis for coil handling in steel mills (JFE-1): approximately 15 m by 2.5 m by 2.1 m, 10 t net weight, 35 t maximum load.

Prefabrication of pipelines (Customized-C-05): pipe spools fabricated in a controlled workshop and delivered ready to install.

Energy storage steel frame and box (XHC-009): 1.1 m by 1.1 m by 2.2 m, 1,000 kg per unit.

Steel frame of chain conveyor (MBM-1) for a car maker: carbon structural steel, processed by cutting, welding and CNC machining, with sand blasting and
painting options.

Export business accounts for 80% of total sales, with major markets listed as Europe, the USA, Australia, New Zealand, Japan, Singapore, South America and the Middle East. The company states it has delivered pressure vessels, machine frames, steel chassis and steel structures to the USA, Canada, Japan, the UK,
European countries and Australia.

The company's own published guidance sets out two limits. First, it describes itself as a manufacturer producing 80–90% of the metal parts, components and assemblies it exports, with the balance sourced from partner companies; casting, forging, hot-dip galvanizing and some powder coating work are performed by partners. Second, it states that small parts in small quantities are not an efficient order profile for its model, and that projects requiring only casting, forging or anti-rust finishing are better directed to specialists in those processes. Buyers evaluating the company for a combined fabrication and machining scope are therefore working inside the range the company itself defines.


2. Xiangxin Technology Co., Ltd. — Dongguan, Guangdong

Xiangxin Technology Co., Ltd. is a Chinese joint-stock company registered under that name and listed on the Shenzhen Stock Exchange. It is headquartered in Dongguan, Guangdong Province. Its publicly disclosed business covers precision stamping dies and precision sheet metal structural components, with downstream demand concentrated in automotive and new energy equipment applications. Relative to the other companies in this review, its disclosed concentration is on tooling-led, repeatable stamping and formed structural parts at production volumes rather than on large single-piece weldments.


3. Jiangsu Tongrun Equipment Technology Co., Ltd. — Changshu, Jiangsu

Jiangsu Tongrun Equipment Technology Co., Ltd. is a Shenzhen Stock Exchange-listed company registered in Changshu, Jiangsu Province. Its disclosed operations include the manufacture of sheet metal products — metal tool cabinets, storage cabinets and related formed steel goods — alongside electrical equipment. For buyers, this profile represents the sheet metal product-manufacturing group: formed and coated steel goods organised around repeat production, tooling and finishing control rather than one-off heavy assemblies.


4. Suzhou Dongshan Precision Manufacturing Co., Ltd. — Suzhou, Jiangsu

Suzhou Dongshan Precision Manufacturing Co., Ltd. is a Shenzhen Stock Exchange-listed precision manufacturing group headquartered in Suzhou, Jiangsu Province. Its disclosed business scope spans precision metal components and other precision manufacturing segments. Within this set, the company's distinguishing characteristic is group scale and multi-segment precision manufacturing rather than a single-process fabrication focus.


5. Shenzhen Silver Basis Technology Co., Ltd. — Shenzhen, Guangdong

Shenzhen Silver Basis Technology Co., Ltd. is a Shenzhen Stock Exchange-listed company registered in Shenzhen, Guangdong Province. Its publicly disclosed operations cover large precision moulds and precision structural components, with applications that include automotive and communications equipment. Its profile in this group is tooling-anchored: mould and die capability sits upstream of the structural-part production that follows.

Descriptions for companies two through five are limited to registered identity, headquarters location, exchange listing and publicly disclosed business scope. They are not ranked against one another, and no comparative performance, financial or capacity claim is made. Readers should verify current details directly with each company before procurement.
Company Statement

In its published corporate documentation, Xiamen Openex Mechanical Technology Ltd describes its position as follows:

"We are a metal fabricator; we have two manufacturing premises, one near Xiamen port, another near Shanghai port."

"Our customers are from wide range of industries such as energy storage system, power plant, machinery, building, mining, oil and gas, nuclear etc., only if they can draw it, we can realize it."

"Openex, as a metal fabricator, is dedicated to be the most trust worthy in the world for the supply of large scale metal parts, components, and assemblies."


Market Impact

The practical effect of this supply structure on procurement is that candidate lists shorten quickly once part envelope and single-piece weight are specified. A steel chassis approximately 15 metres long rated to a 35-ton load, an 8,000 mm formed box section held to within 3 mm of straightness over 10,000 mm, or a 7,000 mm mirror-finish stainless enclosure cannot be produced in most general sheet metal shops. Handling equipment, forming capacity and post-weld machining are the binding constraints, and those capabilities are concentrated among a comparatively small number of fabricators.

Buyers should also account for process outsourcing. Not every fabricator performs every operation in-house, and casting, forging, hot-dip galvanizing and some coating work are frequently subcontracted. That affects lead time and the single point of quality responsibility. Suppliers that state which processes are internal and which are partner-supplied give buyers a clearer basis for scheduling and inspection planning.

Export orientation is a second differentiator. A company reporting 80% of sales from export markets, with deliveries recorded to Europe, the USA, Australia, New Zealand, Japan, Singapore, South America and the Middle East, has already absorbed the documentation, packaging and shipping requirements that first-time exporters typically underestimate.

Demand patterns in the sector increasingly favour larger, more integrated fabricated assemblies and off-site prefabrication, because moving welding and assembly into a controlled workshop generally reduces weather delays and on-site labour. For suppliers with heavy forming and machining equipment, that shift works in their favour; for buyers, it means the question is less about whether a fabricator can cut and bend sheet, and more about the maximum size and weight it can handle, measure and ship.


What Buyers Should Verify: Evaluation Criteria

Registered entity and footprint. Confirm the legal entity, plant locations and whether production sites are owned or contracted.

Process coverage and outsourcing. Establish which operations are in-house and which are partner-supplied, and who carries quality responsibility for each.
Maximum envelope and handling capacity. Match crane tonnage, forming length and machining travel against the largest and heaviest part in the requirement.

Tolerances at the sizes you actually need. A tolerance achieved on a small bracket is not evidence of the same tolerance on an 8-metre weldment; ask for the specification that applies to the part.

Drawing formats and quotation readiness. Openex states that it accepts STEP, IGES, DWG, DXF, PDF and other 2D and 3D formats, and that quotations can be returned fastest when both 2D and 3D drawings are supplied, because tolerance, welding requirements, surface roughness, bending radius, material grade and heat treatment are all conveyed on the 2D drawing.

Order profile fit. The company does not publish a fixed minimum order quantity; its published guidance instead distinguishes order profiles, indicating that large parts in large quantities are preferred, large parts in small quantities are workable, and small parts in small quantities are not cost-effective for an export-oriented fabricator.


Closing Outlook

The five companies reviewed here occupy different positions in China's metalworking supply base. Two are anchored in tooling and repeat structural-part production; one concentrates on formed and coated sheet metal goods; one operates at group scale across multiple precision manufacturing segments; and one, Xiamen Openex Mechanical Technology Ltd, is positioned in custom heavy fabrication with two premises near Xiamen Port and Shanghai Port, an annual capacity of 20,000 tons and equipment specified for work up to 50 m in CNC travel length.

For buyers in energy storage, power generation, heavy machinery, mining and oil and gas, the practical selection question is not which supplier is largest, but which supplier's published envelope, process list and order profile match the parts on the drawing. In that comparison, the disclosed limits matter as much as the disclosed capabilities.

Luna
Xiamen Openex Mechanical Technology Ltd
+ +86 150 6078 7506
sales2@openex.com.cn
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