FOCUS Borosilicate Glass Tube is a professional COE 3.3 borosilicate glass tube rod manufacture. We have over 18 years glass tube production and management experience which allow us provide well packed high quality glass tube to customers all over the world, match the customer’s fast delivery time needs. We have great co-operation with hundreds of borosilicate glass process plants in Hebei and Jiangsu province which are the largest borosilicate glass process cities in china. This make us could provide the best finished products, free samples, lowest price and fast delivery time for customers.