About VELYN

Built for Modern Electronic Drivetrains

VELYN is an online storefront operated by Dongguan Yunlin Technology Co., Ltd. We offer cycling electronics, charging products, tools, and accessories with clear compatibility information and straightforward customer support.

Our catalog includes replacement batteries, chargers, charging adapters, cables, maintenance tools, and related cycling accessories for selected electronic drivetrain systems.

Our Approach

Clear compatibility: Product pages identify the supported drivetrain, component, connector, or device models.
Practical products: Our catalog is selected for everyday riding, training, travel, maintenance, and backup use.
Direct support: Customers can contact us before ordering for help checking product compatibility.
Transparent policies: Shipping, return, refund, privacy, business, and contact information are published on this website.

Product Brand and Trademark Notice

VELYN is the storefront and seller. Products displaying the ALLTOO name are sold under the ALLTOO product brand.

Where compatibility with SRAM or Shimano is stated, ALLTOO products are independent third-party products and are not original SRAM or Shimano products.

Neither VELYN nor ALLTOO is affiliated with, endorsed by, sponsored by, or approved by SRAM, Shimano, or any other third-party trademark owner unless expressly stated otherwise.

References to SRAM, Shimano, AXS, eTap, Di2, and other third-party trademarks or model names are used only to identify and describe product compatibility. All third-party trademarks belong to their respective owners.

Customer Support

If you are unsure whether a product is compatible with your bicycle or component, contact us and include the applicable drivetrain, component, connector, or device model.

Email: support@velyn.cc
Phone: +8615015451288

We normally reply within 1–2 business days.

Business Information

Trade name: VELYN
Legal operator: Dongguan Yunlin Technology Co., Ltd.
Physical address: Building 9, Xinghu'an, Bishui Tianyuan, No. 229 Songfo Road, Dalang Town, Dongguan, Guangdong 523770, China
Website: https://velyn.cc