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The Actual Meaning Behind the Wedding Engagement

The start of the wedding engagement ring dates back to the Fourth Lateran Council, which was presided over by Pope Innocent III (1215). Pope Innocent announced that there needs to be a longer waiting period between a betrothal and the marriage, which spawned the inception of ring giving. Typically plain rings of silver, gold, or iron were presented. Engagement rings with gems were representative of status and aristocracy. After time, diamonds were made available to the middle class as well.The reason that diamonds are generally found in engagement rings traces back to the Middle Ages, and even Roman Times. The Romans revered the diamond simply because they believed it had supernatural powers. It was known to counteract poison, reduce the chances of insanity and dispel fear.These days the diamond engagement ring is considered a standard. This has essentially to do with DeBeer's extensive marketing campaign 'A Diamond is Forever' in the middle of the 20th century.For a huge selection of Wedding engagement rings goto

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200 questions Info center Application
Valve And Pipe Industry
It is mainly used for valve stem seal, pipe fitting connection seal, middle cavity flange seal, pump shell connection seal, pump shaft seal, etc.
Our o-ring have been tested according to the requirements of NORSOK M-710 Edition 3/ISO 23936-2.(Rapid gas decompression resistance).the test passed. This kinds of o-rings are widely used by pump.
Chemical Industry
Mainly used for reactor, pipe, pump, valve and storage and transportation equipment;The main requirements of sealing ring corrosion, high temperature resistance and other properties.
Our company can produce mould and products.In order to improve productivrity, we import 4 
CNC machine. our customer can get products quickly.
Home Appliance Industry
Used for sealing of pipe joints, caps and rotating parts; The seal is required to have food grade, corrosion resistance, high speed and other properties.
Mining Industry
Mainly used for mining equipment, transportation equipment, crushing equipment, grinding equipment, etc.The seal ring is required to have high wear resistance, good pressure resilience and high ductility;
New Energy Industry
Sealing of rotary parts, connecting parts, etc
Metallurgical Industry
Hydraulic seal, rotary seal, pump seal, etc.
Automotive Industry
It is used on gear box, brake, shield, wheel hub, water pump, etc
Equipment Industry
Used in hydraulic system, rotary system, pipe joint, quick plug valve and other components;Seal ring is required to have good deformation resistance, high tensile properties.
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