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Patent certificates

We have certificated to ISO9001-2015 quality management system, and have been awarded the title of "Contract-honoring and Promise-keeping Enterprise" by our city's industrial and commercial department for 14 consecutive years
Utility model certificate of Hefei Zhengzheng Yuanqi 2020
Utility model certificate of Hefei Zhengzheng Yuanqi 2020
Combined enamelling electric furnace
Combined enamelling electric furnace
A welding device for processing pressure vessels (Invention Patent certificates-1)
A welding device for processing pressure vessels (Invention Patent certificates-1)
Stress release device of lead frame material
Stress release device of lead frame material
A Pressure Vessel Processing Fixture (Invention Patent certificates-1)
A Pressure Vessel Processing Fixture (Invention Patent certificates-1)
Glass lining horizontal semi-jacket storage tank
Glass lining horizontal semi-jacket storage tank
Glass lining double-cone rotary vacuum dryer
Glass lining double-cone rotary vacuum dryer
Complete machine debugging device of Glass lining Reaction tank
Complete machine debugging device of Glass lining Reaction tank
Cover rotary welding device of Glass lining disc type Condenser
Cover rotary welding device of Glass lining disc type Condenser
A kind of oil and gas separator for petrochemical industry (Patent certificates-1)
A kind of oil and gas separator for petrochemical industry (Patent certificates-1)
Rotary welding device for tank cover waist connecting pipe
Rotary welding device for tank cover waist connecting pipe
Clamp for processing top hole of tank cover
Clamp for processing top hole of tank cover