OEM 5mm Heavy Duty Tension Spring Helical Extension Spring for door

Dongguan Hezhi Hardware Co., Ltd. is located in Dongkeng Town, Dongguan City, Guangdong Province, China. We are a worldwide import and export trading company.We belong to a group of companies established in the early 20th century.Our company is a spring factory specializing in R&D design, amnufacturer and sales, introduced equipment technology and hired senior engineers with more ten years of experience to highly cooperate with various customized ODM and OEM products.

Our company is a hardware factory specializing in R&D design, manufacture and sales of precision components. The company introduces advanced equipment and production technology from Taiwan and abroad, adopts CNC high-precision computer machine, compression spring machine and other mechanical equipment, and employs senior engineers with more than ten years of work experience to debug mechanical equipment and customize production.
Slogan:“The testimony is pragmatic and the attitude of the people. Quality service is the pursuit of the people!

* Inquiry and consulting support.
* Sample testing support.
* View our Factory.

* Training how to instal the machine, training how to use the machine.
* Engineers available to service machinery overseas.

From the initial sample design of the spring to the mass production of the springs, we can quickly reach your manufacturing goals and immediately provide the best products because we have an excellent production management system and expertly trained technical personnel.
3. Committed to high quality production
To keep HeZhi Springs at the forefront of the industry, we have implemented a stringent internal quality control system and regularly import the latest manufacturing equipment and instruments. Through our precise manufacturing technology and expert mold making process, we provide our customers with the best products and service.
4. Efficiency in manufacturing
Our company's machinery and equipment are controlled by CNC computers. In order to respond to international needs and standards, we continuously update and upgrade our equipment every year. Our machines effectively increase production capacity and save on manufacturing costs. The manufacturing department is the most important core of the whole company and by treating it with utmost importance, we reap great benefits in manufacturing efficiency.
5. Excellent customization services
HeZhi's R&D team designs and completes customized products according to the needs of customers. From the selection of materials to the function of the products, we can design and develop products to suite different customers' requirements. We are constantly involving ourselves in all aspects of the industry because only by having a complete view and analysis of the industry, can there be innovative breakthroughs.

6. Payment term
*T/T : 30% pre T/T, 70% before delivery.
*Trade Assurance
7. Packing
*A: Poly bag, Plstic tray ,small box, carton.
*B: According to customers' requirements.
8. Delivery
*Sample: 7-10 days after deposit received.
*Batch goods: 12-15 days after samples approved.

9. Do you provide samples? Is it free or extra?
We can provide free samples when we have them in stock, but you have to pay the freight.

10. What shipping ways our use?
*By Air

*By Train

*By Sea