With the increasing of environmental problems, the formulation of laws and regulations to control the production of harmful substances has been strengthened worldwide.
Especially for hexavalent chromium compounds, which have been recognized as very effective and widely used for surface antirust treatment, are being gradually restricted
by European and American countries, and their usage has also been reduced.

In this situation, the new technology (Geomet) is replaced traditional Dacromet surface treatment. There is no-chromium ,that met ELV specifications.
This product is a water-soluble solution, can be completely soluble in water, so the treatment is simple, harmless to nature and the operating environment.

The appearance of the treated skin film is metallurgical matt, and its structure is composed of overlapping multilayer metal sheets combined with special inorganic binders.

Compared with traditional Dacromet, Jiumeite has better corrosion resistance. And the thickness of the skin film is thinner than that of the screw, so the nut can have a better fit with the screw.