Frequently Asked Questions
Here you will find the most frequently asked questions and detailed answers about our products, services, processes, etc. Whether you are a new user visiting for the first time or an old customer who has supported us for a long time, you can quickly get the information you need and solve your doubts through this page, so that you can use our website and enjoy related services more smoothly.
1
What kinds of doors are your hardware suitable for?
Our door hardware fits wooden doors, metal doors, fire doors, bedroom doors, office doors, and commercial building doors for both interior and exterior installation.
2
Can you provide OEM and customized services?
Yes. We support customized logo, metal finish, size adjustment, and exclusive packaging for wholesale clients and hardware brands.
3
What is the quality standard of your door hardware?
All our door hinges, locks, and handles comply with EN1935 European hardware standard, CE certification, and ISO9001 quality management system. Every product passes salt spray corrosion test and durability test before shipment.
4
What standards can your custom products meet?
We can engineer hardware to meet international standards, including EN1935, ANSI/BHMA, and local building codes.
5
Can I add my brand logo or packaging to CHAOLANG products?
Absolutely. We offer custom branding and packaging services to support your OEM/ODM needs.
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Contact Person: Mr.LIU
Phone: +86 18022188333
E-mail: zschaolang@outlook.com
E-mail: chaolang188@gmail.com