|Product Name:||15ml black square bottle|
|Color:||Clear, or as your requirements.|
|Delivery Time:||Within 15 or 30 days based on different quantity.|
|Place of Origin:||Ningbo.zhejiang. China|
|FEATURES：||The style is simple, stylish and practical. Wide caliber, easier to dispense, smooth, standard capacity, aluminum pump body, high quality glass, smooth as jade.|
1 raw material pre-processing. The bulk material (quartz sand, soda ash, limestone, feldspar, etc.) is pulverized to dry the wet raw material, and the iron-containing raw material is subjected to iron removal treatment to ensure the quality of the glass.
2 batch preparation.
3 melting. The glass batch material is heated at a high temperature (1550~1600 degrees) in a kiln or a kiln to form a uniform, bubble-free liquid glass that meets the molding requirements.
4 molding. The liquid glass is processed into articles of the desired shape, such as flat plates, various utensils, and the like.
5 heat treatment. Through the processes of annealing, quenching, etc., the stress, phase separation or crystallization inside the glass is eliminated or generated, and the structural state of the glass is changed.