Further optimized the rotor pumps.
The first small-sized rotor pump was produced.
Further optimized the rotor pumps.
Developed large-sized rotor pumps on the basis of the mature rotor pumps.
Developed large-sied rubber-lined twin screw pumps onthe basis of the mature twin screw pumps
A number of rotor pump series were produced.
The first rubber-lined twin screw pump was produced.
The rotor pumps were used in many regions.
Further optimized the rubber-lined twin screw pumps.
Expanded the production scale of the rotor pumps.
Developed large-sized rubber-lined twin screw pumps on the basis of the mature twin screw pumps.
Expanded the marketing of the rotor pumps.
A number of rubber-lined twin screw pump series were produced.
Further improved and pefected the rotor pumps.
The rubber-lined twin screw pumps were used in many regions.
Kept in line with customer needs and further exploited new markets.
Kept improving and perfecting the rubber-lined twin screw pumps.
Kept improving and moving forward.