BtoCAD 是否免費軟件

我搜尋過了, 只找到免費的試用版, 完全版是要收費的. 比AutoCAD平很多, 但用戶的評價不好. 以下是網站資料:


圖片參考：http://www.yfcad.com/images/touming.gif
Cost-effective CAD drawing software
BtoCAD is a highly cost-effective CAD 2D drawing program which is suitable for all industries. With an affordable price, BtoCAD is fully compatible with AutoCAD 2.5 to 2007. Free down the trial version, click here
-> Buy now New features of BtoCAD2007
圖片參考：http://www.yfcad.com/images/touming.gif
What is BtoCAD?
The key advantage of BtoCAD is that it aquires almost all the key functions of AutoCAD while costs less than one tenth of its price. It can be applied widely in almost all industries that need CAD software for design, such as manufacturing, mold, machine, electronics, architecture, telecom, furniture and decoration industries.