With the promulgation of the eu RoHS green directive and the enhancement of human environmental protection awareness, the lead-free low-melting glass has been paid more and more attention.The research status of lead-free low-melt glass at home and abroad is summarized.the composition and physicochemical properties of lead-free borate, phosphate and vanadate glass systems are introduced.the difficulties and trends in the future development of lead-free low-melt glass are analyzed.
Colorless crystal: represents pure, selfless.Can enhance the aura of people, drive away the miscellaneous thoughts.
Purple crystal: represents romance and marriage.The color is noble.
Yellow crystal: represents wealth and fortune.
Tawny crystal: steady and safe.