Contact Us — Send Your Product Info, We Handle the Rest

Q: Can you guarantee one-pass certification?

We do not promise a guaranteed pass — any agency that does is being careless. Our approach is pre-testing and rectification coaching before submission, eliminating non-conforming items ahead of formal testing so that a first-time pass is a realistic prospect.

Q: Why are quotes given as ranges?

Certification costs consist of official fees, testing fees and rectification coaching, and vary widely with the number of models and test items. The ranges serve as a first estimate only; the written assessment is final, and every item is itemized before signing.

Q: I already work with another agency — why choose you?

This is not about replacing your current supplier — it is about having a second option: an extra channel that can help when schedules are full or when the other agency cannot handle certain items. Start with a small project on the first order, and scale up once you are satisfied.

Q: My launch date is tight — how do we back-plan the timeline?

Tell us your launch date and we work backwards: N days for certificate issuance, N days for the test itself, N days for document preparation — which fixes the latest date by which your documents and samples must be in place. We confirm that date in writing and both sides track it together.

Shenzhen · Bao'an

Shenzhen · Bao'an HQ

HQ · CCC / SRRC Type Approval / Network Access License · RF / EMC / Telecom Terminals

Address7F, Building 7, Zone A, Bao'an Internet Industry Base, Xixiang, Bao'an, Shenzhen

Landline0755-86370560

Sales Hotline18927411650 (WeChat)

Emailservice@ctlc.com.cn

Business HoursMon–Fri 9:00–18:00

Visiting Notes

Please book 1 business day ahead by phone or WeChat. For first-time cooperation, we recommend a quick call about your product form factor first — the consultant will tell you what to bring (manual, spec sheet, label samples), and you can get an assessment on the spot.

Nationwide service, remote + on-site: on-site coaching during factory inspection; remote clients can work with us fully online.

📞 Phone / WeChat 1-on-1

0755-86370560 (landline)
18927411650 (WeChat)
Tell us your product and requirements directly, Mon–Fri 9:00–18:00.

📧 Send Materials by Email

service@ctlc.com.cn
Send your manual, spec sheet and label samples by email to
— the consultant will call back with applicable certifications and cost breakdown.

🏭 On-site & Remote Coaching

On-site coaching during factory inspection;
remote clients handle document submission and rectification follow-up fully online,
with written confirmation at key milestones (submission, certification).

Add us on WeChat and ask technical questions directly

One consultant covers all 8 product lines: smart hardware, communication equipment, smart home, industry smart terminals, IoT, sensing & monitoring, satellite equipment, special communication equipment. Send your datasheet, photos and launch plan — the consultant will determine which certificates you need, the timeline, and where the bottlenecks are.

Our WeChat official account and the CTLC Community regularly publish standards analysis, policy updates and practical cases — follow us!

Certification Consultant · 18927411650 Send datasheet / photos for assessment

LOCATION

Lab Base & Service Points

One base in Bao'an, Shenzhen serves clients nationwide. Search “CTLC / 华信检测” in your map app for directions. For large equipment and production line audits, please contact us before scheduling.

Navigate with Amap → Navigate with Tencent Maps →

Shenzhen · Bao'an HQ7F, Building 7, Zone A, Bao'an Internet Industry Base, Xixiang, Bao'an, Shenzhen

FAQ

Before you submit, take a quick look

Can you guarantee one-pass certification?

We do not promise guaranteed passes — any agency that does is not rigorous. Instead, we run pre-testing and rectification coaching before submission, resolving non-conformities before the formal test. That is what makes a one-pass result realistic. Rectification items are listed in writing, item by item; we do not submit until they are fixed.

Why are quotes given as ranges?

Certification costs consist of official fees, testing fees, and rectification coaching, and vary greatly with the number of models, test items and depth of rectification. A range is for initial judgment; the written assessment is final. Before signing, every cost item is listed in writing — no additions after signing.

I already work with another agency — why choose you?

We are not asking you to replace your current supplier — think of us as a second option: when a rush deadline can't fit their schedule, or a project is beyond their scope, you have a rescue channel. Start with a small project, and expand once you trust us.

My launch date is tight — how do we back-plan the timeline?

Tell us your launch date and we plan backwards: N days for certificate issuance, N days for testing, N days for documentation and rectification — that pins down the latest date your documents and samples must be ready. We will send this milestone in writing, and both sides track progress together.

Submit Product Info

Two quick steps · leave your phone first, then the product · assessment within 24h

We will call back within 1 business day; in a hurry, call 18927411650。

Send us your product info — we handle the rest