免费观看一级黄色毛片-成人一级毛片黄色短视频-一级a一片久久免费-下载1级免费黄片-a级免费视频在线-欧美三级片成人在线-一级黄色视频在我-‘一级毛片一级黄片-搜索欧美黄色为录像1级片

1. Pasting method: the plexiglass insulating plate is cut into a certain shape and pasted on the plane. 2. Vertical grinding method: stick shaped plexiglass or thick plate-shaped plexiglass is bonded and then directly ground and polished on the grinding wheel. The handicrafts constructed by this method are similar to some kind of sculptures, and are composed of rich and colorful nominal shapes, forming a unique artistic image.