少妇高潮灌满白浆毛片免费看,中文字幕av伊人av无码av狼人,国产激情综合在线观看,久久国产热这里只有精品

Tel: 18052162330 | | 中文 | ENLISH
News
Your current location: Home News
Basic knowledge of glass bottle products Release time: 2020-04-21 Visited: 673 Times

Glass bottle is widely used in cosmetics industry because of its good sealing performance, stable chemical property, light transmission and sealing material, long-term preservation of products highly sensitive to humidity, free and variable shape, high hardness, heat-resistant, clean and easy to clean, and can be reused. Due to the manufacturing characteristics of glass (the furnace is not allowed to stop at will), in the case of no spot inventory, the general starting order requirements range from 30000 to 100000, 200000, and the manufacturing cycle is long, generally about 30 to 60 days. The larger the order, the more stable the quality of glass. But glass bottle also has its disadvantages, such as heavy weight, high cost of transportation and storage, impact resistance and so on.