Cassity is an OEM and ODM bag manufacturer in China supporting fashion brands, designers, retailers, and sourcing teams with custom bag development and production.
Whether you have a completed tech pack, technical drawings, a physical sample, or an early product concept, we help review the materials, dimensions, construction, hardware, and other details needed to develop a production-ready bag.


Not sure which approach fits your project?
Read our OEM vs ODM Bag Manufacturing Guide for a detailed comparison.






The development process depends on your design and confirmed material requirements. Any technical details still undecided are clarified before final sample approval.
For an overview of the bag categories available, explore our custom bag manufacturing services.
- Overall silhouette and dimensions
- Material, color, and surface finish
- Stitching and construction
- Handle and strap configuration
- Closures and hardware
- Lining, pockets, and branding details

If revisions are required, the updated specifications should be documented and approved before production.
The approved sample and confirmed specifications become the reference for manufacturing.

01. Project Requirements
Share your tech pack, reference images, physical sample, or product concept, together with your preferred materials and estimated quantity.
02. Technical Review and Quotation
Review the dimensions, construction, material options, components, development requirements, and project quotation.
03. Sample Development
Develop a physical sample based on the confirmed requirements.
04. Sample Approval
Review the sample and document any necessary changes before authorizing production.
05. Bulk Production and Quality Checks
Manufacture according to the approved sample and specifications, with relevant checks during production and before shipment preparation.
For a detailed overview, see our custom bag ordering process.

For brands requiring custom logos, labels, and retail packaging, explore our Private Label Bag Manufacturing services.

