Yantai Jisan Heavy Industry:

Materials: good raw materials and rigorous design, easy to deal with all kinds of complex working environment, while ensuring work efficiency and service life.

Oil cylinder: Independently produce high pressure oil cylinder to ensure the quality and power.

Shell: fine heat treatment process, whole plate forming, no welding point, plate thickness, not easy to crack.

Opening: multi-type opening, easy to disassemble all kinds of steel structure valve - can be added with high-quality valve.

Blade: Self-produced to ensure the wear resistance of the blade.

Paint: Environmental friendly paint.

Other manufacturers:

Materials: ordinary raw materials and designs cannot guarantee work efficiency.

Oil cylinder: outsourcing, low oil cylinder thickness.

Shell: welded and thin.

Opening: Single - opening.

Increase speed valve: unable to add.

Blade: purchased, low wear resistance.

Paint: Non-environmental paint.