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.
3) 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