Who We Are

A Caring Manufacturer of Deep Groove Ball Bearings and Pulleys

Qingdao Hipad International Trading Co., Ltd. is a one-stop supplier of window& door rollers and deep groove ball bearings, which is also a manufacturing enterprise with the most complete categories and relatively favorable prices in the industry.

The factory was established in 2000. We have a professional product design, abrasive manufacturing and technical research and development team. We focus on the application of new materials and technologies to provide customers with the best solution in terms of cost and use needs.


Accumulate Steadily Constantly Improve

We offer the right balance of superior technology, industry knowledge and flexibility to make improvements for different application scenarios.

Our team consists of the design department, production department, sales department and after-sales service department.

The factory has 60 injection molding machines, 50 automatic equipment, and dozens of flow production lines. We have a strong production capacity to ensure the timely supply of products and quality assurance. At the same time, we also provide customers with after-sales support and problem-solving solutions.

We are big enough to be a leader in the roller industry. And with flat management, we’re small enough to be responsive, proactive, and quick to act.
By embracing change and innovation, we carefully design personalized products and solutions to meet your needs.


Prototyping, Manufacturing, Engineering, and assembling is the main wheelhouse of expertise.


The factory has completed the quality control program, the third-party SGS and BV certification.


Longevity isn't just about the history of the company, It's about industry trends and where our business is headed.


Even with clients all over the world, support experts are always available when you need them.


  • 200+ Sets Of Mechanical 
  • 100+ Employees
  • 50000+㎡ Workshop Area


We are a factory.We expert in door and window with more than 23 years export history.

Please send a sample with any available information if an item is not shown in our catalog.

We would able to figure out the mould cost and price when we get your sample. If everything is acceptable,we will customize the products as soon as possible.

Yes, we could provice free samples for you. Please feel free to contact our sales.

After the design document is confirmed by both of us, the prototype will be finished within 10 working days. After the confirmation, the sample will be sent to you by express, which will arrive in 3-5 working days.

About our product quality, we can offer you samples for your test, and if we have the chance to cooperate, we can offer you confidentiality agreement and quality assurance agrement.

About the payment, we are verified supplier of alibaba, and we can make trade assurance order on alibaba.

The MOQ of Customized Products is 10,000, better price with more quantity.

Normally we use shipment to transport the goods. It is about 25-40 days. It also depends on which country and port you are.

If there are some emergencies we can send the goods via air express, as long as you afford the traffic expense.

Quality is priority. our workers always attach great importance to quality control from the very beginning to the very end. each products will be inspected before packing.


Our team is completely at your disposal!

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*We respect your confidentiality and all information are protected.