155Total patents obtained
8Invention patent
143Utility model patent
1Software registration

A carbon nanotube reinforced composite pipe connector

A graphene modified fluororubber and its preparation method

A pouring method of elastic waterproof material for bridge expansion joint

A kind of composite material for making connector

A high creep and aging resistant rubber pad under rail

A natural rubber compound to prevent adhesion with cement

An engine oil seal fluororubber and its preparation method

Invention -- a composite material for connector

Patent of engine oil seal

Din6701 bonding certificate

Din2304 bonding certificate


       Hailiwei laboratory belongs to Qingdao Municipal Technology Center laboratory. The laboratory has various modern testing instruments and equipment necessary for rubber materials and polyurethane materials such as chemical analysis, material preparation, performance test and molding processing. It has four departments: physical property testing room, material performance testing room, mechanical property testing room and bench test laboratory. Among them, there are Mooney viscometers and ovens of high-speed rail company, universal material testing machines of Taiwan Yuken and MetS, small open mill, micro melting point tester, ball indentation hardness tester, microscope, glue curing time tester, Brooke infrared spectrometer, Karl Fischer moisture tester, Netzsch red combination instrument, etc., which have international advanced level There are several sets of advanced oil seal products oil resistance test bench test equipment, which creates good conditions for the company's product quality control and new product development.

Salt spray testing machine

Dynamic and static stiffness tester

Drying box

High and low temperature oil seal testing machine

Air tightness testing machine

Oil seal holding force testing machine

Coordinate measuring instrument

Low temperature bench test machine

Servo universal testing machine

Friction torque testing machine

Valve oil seal testing machine

Low temperature brittleness testing machine


Quality management system certification (Chinese)

Quality management system certification

Railway product certification 3

Railway product certification certificate 2

Railway product certification certificate 1

National industrial product production license 2

National industrial product production license 1

SGS Chinese

SGS English

Elastic plate under iron plate

Production license

Bridge expansion joint

Rubber parts for fastener system of high speed railway

Waterproof board