Ningbo LJK Spark Plug Manufacture Co., Ltd, established in 2002 years, is one of the biggest spark plug manufacturers / factory in China, mainly produces and develops spark plugs for cars and motorcycles, lawn and garden machines with resistance type, multi-pole, iridium and platinum, along the surface jump type.

LJK adheres to the service concept of "Quality and Customer take first priority”, committed to providing customers with the best SQDP (Comprehensive Solution, High Quality, Quick Delivery, Reasonable Price).

We have advanced automatic production equipment through the TS16949 and ISO9001 certification.

The core insulator of our product adopts isostatic pressing ceramics powder (Raw materials: Al2O3 by Almatis GE Alumina), which has the advantages of high density, high strength and good insulation, dielectric more than 35KV.

The core Iridium welding technology uses the advanced Automatic 360-degree seamless welding process in Japan to provide excellent appearance, excellent ignition performance and high fuel efficiency.

The fully automatic assembly line with the most advanced CCD visual inspection system, which can accurately detect and adjust the gap of 0.5um，ensure that the ignition gap tolerance of the spark plug is controlled at ± 0.05mm, which is top important key for the quality of iridium and platinum spark plugs.

We adhere to the service concept of "Quality and Customer take first priority", committed to providing customers with the best SQDP (Comprehensive Solution, High Quality, Quick Delivery, Reasonable Price), becoming the preferred supplier for customers in China and more than 50 foreign countries.

LJK is located in a convenient location, closing to Ningbo and Shanghai two major ports. Your visit will be prioritized.

Ignite your Spirit，Exceed your Imagination, Spark your Future