Generally, the sample of engine coil is provided by Haiyan aijian Co., Ltd.without the exemption from freight fee. Taking the distance between export destinations and the port and other overhead expenses into account, the cost of delivering the sample may be higher than the unit price of the sample itself. From delivering the sample out of the factory to customers' hands, the whole manufacturing process can be completed requiring the combined efforts of a great number of people including warehousemen, shippers, and after-sales service staff. The cost of manpower is necessary.

Haiyan is a major Chinese producer of this renowned best ignition coil. China ignition coil is the main product of Haiyan. It is diverse in variety. The product is safe and harmless. During the production, no toxic dyes and agents have been adopted, for example, formaldehyde will be totally eliminated. It works very well with both new and old models. Through custom printed logos, brand, product, and company information, this product helps the microtargeting of prospective customers. It helps the engine resist cracks and pinholes.

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