Quality Issues / Car & Motorcycle Hardware Parts (C type retaining ring, washer, lock nut, clip, snap ring, pin) Manufacturer Since 1991 | SHOU LONG

Quality Issues / 40 Years Auto Hardware Stamping Parts (C type retaining ring, washer, lock nut, clip, snap ring, pin) Manufacturer From Taiwan | SHOU LONG

Quality Issues


1.Is the product size wrong with tolerance? Let Shou Long help you.

To avoid inaccuracy of personal product inspection, we introduced KEYENCE Automatic Measuring Equipment for quality control and first article inspection . We finish high-precision measurement with total automation.

2.Does the product burr exceed tolerance? Let Shou Long help you.

We have many thickness sieve sorters, which can pick out products over thickness tolerance.

3.Is the product thickness off-standard? Let Shou Long help you.

The thickness of electroplating will influence the product's corrosion resistance. As a result, we purchase X-Ray Fluorescence Coating Thickness Testers in order to ensure product quality.

4.Does the product brittle? Let Shou Long help you.

During the processing, heat treatment, pickling and electroplating, the mechanical performance may get worse and brittle due to the penetration of hydrogen atoms. Now, we have many Hot Air Circulation Drying Machines. After products are electroplated and dehydrogenated, they can effectively drive out the hydrogen atoms penetrating into the coating or the material matrix to avoid hydrogen embrittlement.

5.Is the product corrosion resistance off-standard?Let Shou Long help you.

Hardware products have to be tested with corrosion resistance ability, we equip Salt Spray Testers to check the corrosion degree.

6.Is there much impurity in products?Let Shou Long help you.

During the manufacturing process, we use vibration screener machines to separate impurity from products.

7.Is the product’s defective rate too high?Let Shou Long help you.

We have many optical sorting machines so as to improve product yield and lower error rate when doing the manual work.

8.Is the product film thickness not enough? Let Shou Long help you.

The thickness of electroplating will influence the product's corrosion resistance. As a result, we purchase X-Ray Fluorescence Coating Thickness Testers in order to ensure product quality.


Quality Issues | Car & Motorcycle Hardware Parts (C type retaining ring, washer, lock nut, clip, snap ring, pin) Manufacturer Since 1991 | SHOU LONG

Based in Taiwan since 1991, Shou Long Precision Industrial Co., Ltd. has been an auto hardware fastener stamping and mold development manufacturer in Cars and Motorcycles' Parts Industry. Their main products, including C type retaining rings, washers, motorcycle clips, nuts and other OEM stamping parts, which have over 10,000 selections and sold in Europe, Japan, East Asia and other regions..

With 40 years experiences of the mold development, our founder can assist customers in improving the mold manufacturing process. We work hard for better stock availability as well as delivery punctuality, and we manufacture nearly ten thousand products such as C type retaining ring, washers, motorcycle clips, nuts and other OEM stamping parts.

SHOU LONG has been offering customers high-quality Retaining Rings, Cage Nuts, Plate Nuts, Toothed Lock Internal Washers, Toothed Lock External Washers, Push on Nuts, Self-locking Internal Nuts, Self-locking External Nuts, Snap Pins, Wave Washers, Curved Washers since 1991, both with advanced technology and 40 years of experience, SHOU LONG ensures each customer's demands are met.