97夜夜澡人人爽人人喊中国片/国产99视频精品免视看7/国内精品久久久久久无码不卡/久久久久久久久久福利/欧美非洲黑人性xxxx/日本激情网

Schott Group's domestic partners and authorized distributor for certain optical materials. According to market demand, assist the international glass manufacturer to determine glass frit and melting molding specifications for new applications. According to the characteristics of imported materials, cooperate with domestic enterprises to explore their processing technology and help localization promotion. Large stock of high-end optical materials, complete spot supermarket for imported optical glass materials in China. Convenient for domestic optical processing factories to optimize their own inventory management, reduce inventory pressure, and purchase materials on demand. Process imported materials with large size and complete packaging into blanks or semi-finished products according to the actual needs of customers. Save the front-end glass blank processing process for domestic optical processing factories and help them focus on the back-end precision processing.