（1）Three times welding--first Tig welding can make the products stronger without breakage, then Fish Scale welding can make the products more beautifull,the last is gold welding delicacy ,Three times welding can make the products anti-knock in the bad driving environment, decrease the maitaince cost, improve the customers satisfaction
（2）Each production progress will have the special position tooling to make the product will be correct and this can make sure the exhaust header assemble well to save the asseble cost, improve the efficiency.
（3）Using the special check fixture to check the inlet can make install more conveniently, no need calibrate, which can save installation cost and improve customer experience and satisfaction.
（4）Pipe was cleaned by the ultrasonic wave to make sure there is no impurity inside. Special handling make the pipe inside smooth without the rag to keep the pipe air flow. Stable performance and high experience which get the good reputation from customers and enhance the customer stickiness
（5）We use three-layer packaging, Wrap the anti-oxidation film firstly to prevent product from being oxidized and maintain the luster of the product.Then wrap the pearl cotton and bubble bag to protect the product from damage during transportation,which can save repackaging cost, improve customer satisfaction and recognition.