First of all, the crystal glass is also a kind of glass, the most important component is silicon dioxide, but the introduction of lead, barium, zinc, titanium and other materials. Because the glass has higher transparency and refractive index, its appearance is bright and crystal clear, so it is called crystal glass. If lead is introduced, it is lead crystal. Lead-free crystals are introduced into barium, zinc and titanium. How to distinguish the two? A sense of touch. Because the thermal conductivity of crystal is stronger than that of glass, it is better to touch the crystal with the hand than to touch the glass. Two look at the hardness. Natural crystal hardness is 7, glass hardness is 5, so crystal can cut glass. Three look at refraction. Lifting a crystal cup and turning it against the light, you will find it like an exquisite handicraft, white, clear, reflecting the fascinating colorful light, because the crystal can absorb gloss, even ultraviolet light, and ordinary glassware without gloss, not to mention refraction. Four listen to the voice. Crystal glassware emits a light, crisp metallic sound with a gentle tap or a finger-tap, and produces a delicate lingering sound through the air. Ordinary glassware only produces a dull "click, click" sound.
Production process and characteristics. Crystal cup body is made of high-grade crystal glass by high-tech meticulous processing and firing, using high-temperature firing process at 640 C to reach the critical point of crystal glass melting, transparent, pure and non-toxic, and the use of annealing process to ensure that the cup body can withstand the instantaneous changes of heat and cold, explosion-proof, tailless vacuum, with penetration High brightness, strong crystal sense, wear resistance, etc., crystal clear, elegant and generous. At the same time, double-layer glass structure, with a certain degree of cooling and heat preservation; cup mouth smoothly polished by special technology, taste comfortable when drinking; more convenient to use, more reasonable design, more user-friendly. Crystal Cup Advantages: As an important member of cup products, it has gradually shown its advantages in drinking water. Crystal Cup products have the following advantages: smooth surface of crystal glass, easy cleaning, health and hygiene, and such as stainless steel cup, purple sand cup because of its surface can not be observed by the naked eye gaps, bacteria, impurities, etc. Tea scales are easy to adhere to, not easy to clean; crystal cup transparent and pure, tea and other drinks, can see the shape and color of the brew, bring good sensory enjoyment; crystal cup has a certain cooling and heat preservation effect, the best brewing effect, to ensure good taste of tea and repeated brewing, and stainless steel cup true Empty structure, when making tea is very easy to make tea paste, affecting the taste; crystal cup body colors and patterns changeable, fine workmanship, and the beverage in the cup reflects the user's taste; high-grade crystal glass with its exquisite handicraft skills and exquisite packaging, become a gift and collection of excellent products.