日韩在线一区二区不卡视频,久久夜色撩人精品国产,真实国产乱子伦高清对白,午夜福利片1000无码免费

Welcome: Dongguan SDUN Intelligent Technology Co., Ltd.
Language: Chinese ∷  English

About us


Established in March, 2016, SDUN is a  professional designer and manufacturer of digital lock and storage solutions.

The founder Mr. Ren has been worked on designing and manufacturing digital locks in the past 16 years, who is leading a product development team that has rich experiences.  SDUN has obtained more than 50 patents and certificates in the past 3 years, our low power consupmtion design and special APP management system are well received by our customers.

Based on innovation and technology, our team commits to supplying more energy-saving and convenient products to our customers.






CONTACT US

Contact: Ren Jian Bo

Phone: 技術(shù):13178826373 銷售:13602863586

Tel: 0769-28826779-801或808

Email: [email protected]

Add: 302, building 2, No. 16, Xinhe Shengfeng Road, Wanjiang Street, Dongguan, Guangdong,China, 523000

Scan the qr codeClose
the qr code