Welcome to get to know S4A factory! We specialize in manufacturing a wide range of accessories for access control systems and automatic door units. Whether you're looking for cards, access control machines, or software, we've got you covered. Our one-stop procurement service means you can find all the corresponding hardware and software solutions right here, without the hassle of dealing with multiple suppliers. With 15 years of rich experience in production and operation, we have mastered the ins and outs of this field.
We are proud to offer OEM and ODM services, tailored to meet your unique requirements. No matter how simple or complex your needs are, we are committed to providing you with high-quality products and professional services.
We look forward to building a long - term and mutually beneficial relationship with you!
Friendly Reminder
Please be informed of our company’s holiday arrangement for the 2026 Chinese Spring Festival as follows:
Our factory will commence holiday from January 31st, 2026
Our office will be closed starting February 7th,2026 (team building activities are scheduled for February 5th to 6th);
All our business operations will resume fully on February 28th, 2026.
During this period, our response to your inquiries may be slightly delayed due to the holiday schedule. Rest assured that we remain committed to serving you: you are welcome to leave us messages at any time, and we will get back to you promptly as soon as we have internet access.
Thank you for your continuous support and understanding to S4A and our work. We appreciate your cooperation and wish you a joyful Spring Festival!
Best regards,
S4A Team

Factory Address:Building S4A, South Third Lane, Qiuyuling Street, Zhangkeng Village, Hengli Town, Dongguan City, Guangdong Province Office Address:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.