HTB product mainly is divided into three categories: the ultra precision measuring instruments, ceramic valve, health environmental protection equipment accessories. Ultra precision measuring instruments such as ceramic gauge blocks (minimum size can be 0.2 mm, maximum 300 mm), ceramic cylindrical gauges (pin gauge, ring gauge, Cylindrical Squares ), ceramic straight master, the CMM standard ball and measuring probe, inferior smooth ceramic dumbbell ball, etc. Ceramic pump and valve is including: all kinds of ceramic seal valve, ceramic piston pump, ceramic acting pump, ceramic filling pump and large size ceramic flat seal . Health environmental analysis instrument accessories includingï¼š ultra-precision quadrupole mass analyzer, six pole transmitter, valveless micro pump, blood sampling valves, ceramic injection valve such as four,six, eight,ten-way, etc.