Tianjin QM Optics is a leading manufacturer and supplier for precision quartz and optical glass products. Our products include: high precision glass and quartz capillary tubes and rods, quartz glass tubes and rods, quartz and optical glass discs / substrates / wafers, CNC machined quartz parts, quartz instruments, various high precision glass parts, ceramic components etc. In past years, we have successfully developed primary and secondary drawing production processes based on different glass capillaries requirements. Except the round tubes and rods, we can provide non-circular tubes and rods, like square, rectangular, triangle, half round, with single bore, double bores, triple bores or more bores on cross section.....