BulkCalc 中文集成版 / 批量选品利润计算
Upstream: https://github.com/itsukiken1/bulkcalc
Author: itsukiken1 / BulkCalc contributors (upstream footer: Free tool by AIHM)
License: MIT, as declared in the upstream README (retained alongside this notice).
Source snapshot: master/index.html, retrieved 2026-10-10
SHA256: B043AF7021BB48A336AA303F6B9C462336A9E9BD84CF8489B89397C0D16F6F58

Adaptation: upstream cost calculation model and illustrative market/platform presets
ported to TypeScript and React. Chinese UI, original Chinese examples, strict CSV
validation, per-product weight, advertising/other costs, break-even pricing,
weighted batch summary, safe CSV export and local toolbox integration added.
Upstream raw innerHTML rendering is replaced with React text rendering.
Original shipping/platform rates are illustrative presets, not current quotes.
The integration does not call upstream analytics, advertisements or sharing links.
Reference exchange rates use this site's existing /tools/exchange service on request.
The upstream README declares MIT but the snapshot has no standalone LICENSE file;
the standard MIT permission text is reproduced below with contributor attribution.

MIT License
Copyright (c) BulkCalc contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.