we are the manufacture of cartridge heaters in china with CE,ROHS,ISO9001,CCC,certification.

specification:

1) Materials: quality stainless steel, high purity MgO powder and NiCr metal

 2) Rated voltage:  by the clients need..any volts can be ok.

V3) Diameter: 3mm,4mm, 5mm, 6mm, 6.5mm and up

4) Type k and J thermocouples can be attached Other Products

if u r interested in any of the products,pls donot hestient to contact me

       (email:cnhszj at gmail dot com        contact:MS.LILIAN ZUO               skype:cnhszj)