Lead-free crystal glassware is the only domestic product in the Germany equipments and technology to make.The features are as the following as: 1. more environmental-friendly and healthy 2. enjoying the features of  withstanding  cold and hot and resistant compact. 3. withstanding the corrosion of detergent,and it can keep its clear and transparent even if used for a long time. 4. it is impossible to compare with the normal glass to the lead-free crystal in refraction,transparent and the result of the sweet music,when impacting the glass each other.