HangZhou Rainbow Auto Parts Co, Ltd is a specialized manufacturer of spark plugs, using the world advanced technology of Isostatic Pressing Ceramic Insulator, with strong technical team, advanced manufacturer facilities and well-experienced workers.

Our company pays high attention to the quality management and after- sales service. In future, we will keep working hard to develop higher products, and providing customers with the best service.



Spark plugs have the following fetures:
1) Multi-ribbed insulator eliminates flashover.
2) 95% pure alumina insulator, Great mechanic and electronic features, superb insulation.
3) Nickel plated housing prevents oxidation and corrosion, Heat crimping process ensures absolute air-tight fit.
4) Inner sealing with conductive glass ensures a fine conductivity and sealing.
5) Multi-layer gaskets have strong elasticity and reliable in sealing.
6) Copper core electrode vastly improves heat dissipation and prevents dangerous, overheating of the engine.
7) Good electricity and heat conductivity, Long spark plug service life.

Normal Spark Plug
1.Electrode Material:Center electrode: Nickel; Ground electrode: Nickel
2.Feature:Most of the original car use this spark plug
3.Lifetime:The designed life is 5 W KM; The best economic life is 30000 KM
4.Advantage:Lower cost

Platinum Spark Plug
1.Electrode Material:Center electrode:Platinum; Ground electrode: Nickel
2.Feature:Cost-effective high performance
3.Lifetime:The designed life is 7 W KM; The best economic life is 50000 KM
4.Advantage:Start easy; Accelerated fast

Iridium Spark Plug
1.Electrode Material:Center electrode: Iridium; Ground electrode: Nickel
2.Feature:Start easy;Fuel saving;Accelerated fast Combustion
3.Lifetime:The designed life is 8 W KM; The best economic life is 60000 KM
4.Advantage:Start easy;Fuel saving;Accelerated fast Combustion

Iridium/Platinum Spark Plug
1.Electrode Material:Center electrode:Iridium; Ground electrode:Nickel
2.Feature:Start easy;Fuel saving;Accelerated fast Combustion
3.Lifetime:The designed life is 16 W KM; The best economic life is 80000 KM
4.Advantage:Start easy;Fuel saving;Accelerated fast Combustion;Longer lifetime

Double Iridium Spark Plug
1.Electrode Material:Center electrode: Iridium; Ground electrode: Iridium
2.Feature:The fastest accelerating
3.Lifetime:The designed life is 16 W KM;The best economic life is 80000 KM
4.Advantage:Start fast;Power upgrade;Stable ignition;Lowest misfire; Complete combustion;Fuel saving;Clean the exhaust Longest Lifetime

Q1.Could you tell me the material of our bearing?
A: Nickel or Iridium.

Q2.What is your terms of packing?
A: Generally, we pack our goods in Neutral Blister. If you have legally registered patent, we can pack the goods in your brand after getting your authorization letters.

Q3. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q4. How about your delivery time?
A: Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds.

Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.

Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.

Q8: What is your terms of delivery?
A: A: EXW, FOB, CFR, CIF.

Q9: Do you accept OEM&ODM?
A: Yes, we accept.

Q10: How do you guarantee the quality of the product?
A: Our factory has established a comprehensive testing mechanism, and every step of the production has undergone a strict quality inspection.
Our product quality matches our price and has been distributed to customers all over the world in the past 10 years, with no complaint from customers. If there is any quality problem, our company will be responsible to the end.