• 1-hour quotation for customized products
• Fast samples in 5 hours
• Online pre-shipment inspection with videos, pictures and reports
• Online 3D/VR factory inspection and online meeting
• No MOQ required for customized products
• Free samples and renderings
Years Experience
On-time Delivery
Factory Area
Choose one process or combine several. Yishang keeps drawings, samples, quality requirements and delivery plans connected from the first review to repeat production.
Custom metal enclosures, cabinets, panels, brackets, welded frames and structural assemblies. Supporting laser cutting, bending, stamping, deep drawing, welding, finishing and assembly.
Milled and turned metal components, precision interfaces, mounting features and functional parts. Suitable for samples, production components and secondary machining.
Aluminum and zinc housings, bases and structural components with tooling, machining, finishing and assembly support.
Custom profiles, rails, posts and structural members that can be cut, machined, finished and integrated into complete assemblies.
Custom plastic housings, covers and functional components with tooling, insert molding and overmolding support from samples to repeat production.
Fast prototypes for design review, fit testing and functional evaluation before tooling or production decisions are finalized.
You know what happens after the drawing is sent and which decisions are fixed before volume production begins.
We confirm grade, quantity, environment, interfaces, cosmetic faces and delivery expectations.
We identify unclear finish notes, difficult weld access, avoidable scratches and features likely to delay repeat production.
Your sample confirms fit, visible appearance, weld condition and the surface protection you expect.
Material identity, orientation, tooling, joining, finishing and inspection references are released together.
The batch is checked for critical dimensions, assembly fit and surface consistency—not dimensions alone.
Finished faces are separated and protected against rubbing, moisture and mixed-metal contact during shipment.
One project team coordinates drawings, samples, manufacturing stages, quality requirements and delivery plans.
We review key manufacturing and assembly details before production to reduce avoidable rework and fit problems.
Start with samples or small batches, then move into stable repeat production after approval.
Metal parts can be fabricated, finished, assembled, inspected and packed under one project plan.
Customers Worldwide
Countries Served
Industries Served
Projects Completed
Dimensions alone do not decide whether a product will work. We review the details that affect fit, appearance, assembly and repeat production.
We review the material, thickness, critical dimensions, hole positions, bending details, weld locations, surface finish and assembly interfaces against the current drawing or approved sample.
Key forming, welding, machining and appearance requirements are checked at the relevant production stages to reduce batch variation, rework and assembly problems.
Dimensions, appearance, assembly fit, quantity, labeling and packaging are reviewed before delivery so the order arrives ready for receiving and installation.
See Our Production and Quality Management
Feedback from customers who needed consistent parts, practical communication and a smoother route from sample approval to production.
The sheet metal parts arrived with clean edges, accurate dimensions and consistent finishing. Yishang reviewed the drawings before production, which made assembly much smoother.
Lorry Melon
We needed a custom metal enclosure for a new product. The team responded quickly, suggested practical material and finish options, and delivered samples that matched our requirements.
Steve Smith
Yishang understands OEM projects and keeps communication clear. They helped us move from sample testing to repeat orders with stable quality.
Elora
Our project required customized metal components in large quantities. Yishang provided inspection support and reliable production quality, helping us control cost and delivery risk.
krista
Yishang is a manufacturer with 26+ years of sheet metal experience and its own metal-production workshops. We also manage the additional processes required for multi-process projects.
Yes. One project team coordinates the drawings, samples, quality requirements, production stages and delivery plan across the required processes.
Yes. Samples can be produced and reviewed before repeat production is released.
Send your current sketches, photos, samples or available files. We can review what information is still required before manufacturing begins.
Quality requirements are reviewed before production and checked at the relevant manufacturing, finishing, assembly and packing stages.
There is no single MOQ for every project. Samples are supported, while the practical production quantity depends on the material, process and tooling requirements.
Liancheng Building, No. 21 Deyuan South Rd 12 Lane, Jidongyi, Xiaolan, Zhongshan, Guangdong, China
If you have any questions or need a quote, please send us a message. One of our specialists will get back to you within 24 hours and help you select the correct valve for your needs.
All of our products are available for sampling
