# Zhihuo Software

> SmartPacker container-loading software in T1, T3, and U3 editions. We have built container loading software since 1998; the company was established in Beijing in 2003, with offices in Beijing, China and Winnipeg, Canada. Business model: customized development and company-wide licensing. The free trial/download versions are deliberately simplified baselines for per-client customization, and a production version can be significantly more sophisticated than the trial.

## Container Loading (SmartPacker)

- [T1 - Single-SKU loading](https://www.zhihuo.net/t1/): one carton size loaded into a container, pallet area, leftover space, or a larger box. Free browser app plus Windows download.
- T1 WebAPI: `POST https://mcp.zhihuo.net/api/t1/pack` accepts one carton size plus a container preset or explicit space dimensions and returns the count, fill rate, placed regions, and a 3D image URL. OpenAPI: `https://mcp.zhihuo.net/api/t1/openapi.json`. Free, no API key; public depth-2 placed-layout policy.
- [T1 benchmark report](https://www.zhihuo.net/t1/benchmark/): reproducible 10,000-case single-SKU 40HQ benchmark, refreshed June 20, 2026, with package-style carton dimensions, downloadable CSV, summary JSON, Python generator ZIP, local CLI verifier, upright-only baseline columns, and named public-app spot checks for Pier2Pier, SeaRates, CargoesPi, EasyCargo, Goodloading, and CargoLoader3D. T1 depth 3 beat the six-orientation one-cut baseline on 7,873 cases, tied 2,127, lost 0, and averaged +2.656% cartons. Public MCP stays depth 2; depth 3 is available in the browser app, downloadable desktop apps, and local CLI package.
- [T3 - Mixed-carton loading](https://www.zhihuo.net/t3/): multiple carton sizes, all six orientations, interactive quantity panel. Windows trial.
- [U3 - Upright palletized loading](https://www.zhihuo.net/u3/): mixed palletized or upright-only cargo, standard and non-standard pallets. Windows trial.

## Company

- [About Zhihuo Software](https://www.zhihuo.net/about/): since 1998; Beijing and Winnipeg; customized development and company-wide licensing.
- Contact: zhzx@zhihuo.com
- Chinese site (container loading only): https://www.zhihuo.com/