Manufacturers are continually looking for new methods to present their products to a broader range of customers in order to increase the selling numbers and brand recognition. Furthermore, with the quickly developing e-commerce market, there is a strong need for efficient and user-friendly methods of online product visualization for both wholesale and retail customers. In this paper, we describe and evaluate a method of products visualization using 3D web technologies. The visualization encompasses a large virtual showroom with a number of high-detail product models. In the showroom, customers can see an entire collection of products and can inspect particular products. The visualization has been designed to reflect as much as possible the real experience, including high detail architecture and furniture, photographs, videos, and music. The virtual environment has been prepared using AutoCAD, SketchUp, 3ds Max and Unity, and exported to WebGL. In the paper, we describe the design of the environment and evaluate its performance on different hardware and software platforms.