Factory wholesale Polypropylene Subwoofer Cone For Car - 2″-Speaker rubber surround – EPDM rubber edge – Nandi Yanlong

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"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our company for the long-term to develop together with customers for mutual reciprocity and mutual benefit for 21"Speaker Cone , Multimedia Bass Passive Radiator Speaker , Speaker Replacement Diaphragm Kit Accessory For Car , By more than 8 years of company, now we have accumulated rich experience and advanced technologies from the generation of our merchandise.

Factory wholesale Polypropylene Subwoofer Cone For Car - 2″-Speaker rubber surround – EPDM rubber edge – Nandi Yanlong Detail:

Material	NBR	SBR	IIR	EPDM	Foaming
Size	1mm-21mm	1mm-21mm	1mm-21mm	1mm-21mm	3mm-12mm
Hardness	45°-85°	45°-85°	45°-85°	45°-85°	55°-75°
Thicken	0.15mm-10mm	0.15mm-10mm	0.15mm-10mm	0.15mm-10mm	0.15mm-10mm
Shape	Round, oval, irregular, etc., accept foreign molds, and support customized molds
Color	Black, gray, etc. according to customer requirements
Surface treament	Smooth, frosted, undercut, etc. according to customer requirements
Edge design	High-pressure strip, texture, reverse concave edge, notch, punching, etc. according to customer requirements

The quality of the rubber edge has a great impact on the frequency response of the speaker, and the hardness directly affects the frequency of the speaker. The service life of rubber ring is also very long.

EPDM rubber surround has excellent resilience and is an ideal choice for outdoor speakers, gaskets and fasteners.

EPDM is a terpolymer of ethylene, propylene and non-conjugated dienes, which began commercial production in 1963. The annual consumption of the world is 800000 tons. The main characteristic of EPDM is its superior oxidation resistance, ozone resistance and corrosion resistance. As EPDM belongs to the polyolefin (PO) family, it has excellent vulcanization properties. Among all rubbers, EPDM has the lowest specific gravity and can absorb a large amount of fillers and oil without affecting the properties. Therefore, it can produce low-cost rubber compounds. EPDM is a terpolymer of ethylene, propylene and unconjugated dienes. Dienes have a special structure, and only one of the two bonds can be copolymerized. Unsaturated double bonds are mainly used as the crossing point. The other unsaturated chain will not become the main chain of the polymer, but the side chain. The main polymer chain of EPDM is completely saturated. This property makes EPDM resistant to heat, light, oxygen, especially ozone. EPDM is non-polar in nature, resistant to polar solutions and chemicals, low water absorption and good insulation characteristics.

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Our advantages2

Q1: Can you make OEM/ODM or custom order?
Answer 1: We welcome OEM/ODM or customized product list.

Q2: What is the packaging of your products?
Answer 2: The packaging method is based on the cartons uniformly used by the company, and special packaging will be charged separately.

Q3: Can I get samples from you for testing?
Answer 3: Customers are welcome to take samples for testing. Our company supports free samples of existing models. You only need to bear the freight.

Q4: What are the terms of payment?
Answer 4: 30% T/T deposit, 70% T/T balance payment before delivery. If there is special need, it can be negotiated.

Q5: Can I visit your factory?
Answer 5: 1. In the epidemic environment, our company provides remote online factory detection service. Please contact our business. 2. Welcome to visit the company for field inspection. Please make an appointment in advance before the investigation, so as not to delay your schedule.

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"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our firm for the long-term to create jointly with consumers for mutual reciprocity and mutual reward for Factory wholesale Polypropylene Subwoofer Cone For Car - 2″-Speaker rubber surround – EPDM rubber edge – Nandi Yanlong , The product will supply to all over the world, such as: Stuttgart, Comoros, Madagascar, Our company has always insisted on the business principle of "Quality, Honest, and Customer First" by which we have won the trust of clients both from at home and abroad. If you are interested in our solutions, you should do not hesitate to contact us for further information.

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