At present, in terms of material, there are generally three types of glass cups: Yintong style glass cups, double layer glass cups, and crystal glass cups. In terms of function, popular glass cups generally include tea cups, wine cups, juice cups, and portable portable cups. Below is a detailed introduction to the selection techniques for three types of glass cups with different materials。

1. Ordinary glass cup

Most ordinary glass cup materials are made by high-temperature firing, using high boron heat-resistant glass, which has excellent heat resistance and corrosion resistance; As a green and environmentally friendly glass material, the cup body is crystal clear, with a moist touch and elegant design, making it a good companion for making tea and drinking healthy water.

1. Material quality should be pure: If the glass material is impure, there will be lines, bubbles, or sand on the glass drinking utensils. Coarse lines can be felt by hand, while fine lines can only be seen when facing the light. The material bubble is located in a relatively deep part of the glass body, which looks like a small circle from the outside. The operating bubble is relatively exposed, some of which are like fish eyes protruding, and a slight poke can pierce the hole; Some small scars on fruits can easily peel off layer by layer. Sand "refers to white granular silica sand embedded in the glass without melting, and also refers to other granular impurities.

2. The thickness should be consistent: When selecting, the drinking utensils should be observed to the light. If the light sensation is consistent and integrated, it indicates that the thickness is consistent. From the outside, the bottom should be horizontal rather than sloping or pot shaped. Gently flicking the walls with your fingers should make a pleasant sound.

3. The appearance should be beautiful: that is, the surface should be smooth, and the cup glossiness should be good; The geometric shape of the cup cover should not be too loose or too tight, and the shape of the teapot and cup should be coordinated.

1. Ordinary glass cup

Most ordinary glass cup materials are made by high-temperature firing, using high boron heat-resistant glass, which has excellent heat resistance and corrosion resistance; As a green and environmentally friendly glass material, the cup body is crystal clear, with a moist touch and elegant design, making it a good companion for making tea and drinking healthy water.

1. Material quality should be pure: If the glass material is impure, there will be lines, bubbles, or sand on the glass drinking utensils. Coarse lines can be felt by hand, while fine lines can only be seen when facing the light. The material bubble is located in a relatively deep part of the glass body, which looks like a small circle from the outside. The operating bubble is relatively exposed, some of which are like fish eyes protruding, and a slight poke can pierce the hole; Some small scars on fruits can easily peel off layer by layer. Sand "refers to white granular silica sand embedded in the glass without melting, and also refers to other granular impurities.

2. The thickness should be consistent: When selecting, the drinking utensils should be observed to the light. If the light sensation is consistent and integrated, it indicates that the thickness is consistent. From the outside, the bottom should be horizontal rather than sloping or pot shaped. Gently flicking the walls with your fingers should make a pleasant sound.

3. The appearance should be beautiful: that is, the surface should be smooth, and the cup glossiness should be good; The geometric shape of the cup cover should not be too loose or too tight, and the shape of the teapot and cup should be coordinated.

2. Double layer glass cup

The double-layer glass cup is translucent, not easy to heat, easy to clean, does not leave tea stains, and is resistant to friction. A high-quality product that integrates environmental protection and practicality.

The biggest advantage of double-layer glass cups is thermal insulation. There is a vacuum partition between the two layers, which can protect the water temperature of the cup body and prevent heat insulation from getting too hot. 1. Appearance identification. Firstly, check whether the surface polishing of the inner and outer tanks is uniform and consistent, whether there are bumps, scratches, or burrs. Secondly, check whether the sharp joints at the mouth are smooth and consistent, which is related to the feeling of comfort when drinking water. Thirdly, check whether the internal seal is tight, whether the plug and cup body match. Fourthly, check the cup mouth. The rounder the better, and the incomplete process will result in non roundness. 2. Sealing test: First, twist off the cup lid to see if it fits perfectly with the cup body, then add boiling water (preferably boiling water) to the cup, and then invert the cup for two to three minutes to see if there is any water leakage;

3. Insulation test: Put boiling water into a cup, and after two to three minutes, touch each part of the cup with your hand to see if it is hot. If any part heats up, the temperature will be lost from that place. It is normal for the area like the mouth of the cup to have a slight fever;

4. Capacity detection: First, check whether the depth of the inner layer and the height of the outer layer of the insulation cup are not significantly different (usually 18-22mm). Many small businesses, in order to reduce costs, often focus on materials, which may affect the capacity of the cup:

5. Identification of stainless steel for double-layer glass cup materials: There are many types of stainless steel materials, with 18/8 indicating that this stainless steel material contains 18% chromium and 8% nickel. Materials that meet this standard are green and environmentally friendly products that meet national food grade standards, and are rust proof and corrosion-resistant. The body color of ordinary stainless steel cups (kettles) appears white or dark. If they are soaked in 1% saline solution for 24 hours, rust spots will appear, and some of the elements in them exceed the standard, directly endangering human health

3. Crystal glass cup

Crystal glasses are often used as wine glasses. When distinguishing the quality of these types of cups, one can start with the following points: 1. Sound: Gently scatter or flick with a finger on the vessel, the crystal glass can make a light and brittle metal sound, and ripple out beautiful afternotes in the breath. 2. Hand feel: Gently grasp a crystal tall wine glass, and you will feel a calm and heavy hand. 3. Gloss: Lift a crystal cup and rotate it towards the light, and you will find that it is like an exquisite handicraft, pure and transparent, reflecting charming colorful light. 4. The crystal has high hardness. After scientific experiments, their relative hardness was measured, resulting in a crystal hardness of 7

5. The crystal has good stability and will not change color after long-term use.

6. Different physical properties. Crystals can make marks on glass, but not vice versa.