Phones, CPEs, cellular modules, network equipment and base-station accessories — multi-standard, multi-band combinations with finished devices and modules coexisting: the line with the most test items and the longest timelines. Lock the band combination before design freeze, or rework costs will be extremely high.

Scope covers phones and tablets, CPE and MiFi, wireless data terminals, cellular modules (2G to 5G, NB-IoT, Cat.1, Cat.M, RedCap), wireless fixed-line phones, routers and switches, wireless APs, optical network units (ONU/OLT), PoE and industrial switches, fibre transceivers, and base stations with accessories (RRU, AAU, antennas, repeaters, indoor distribution systems). Multi-standard multi-band combinations, carrier aggregation, dual-SIM multi-mode, Wi-Fi 6/7, PoE power and industrial wide-temperature operation; finished devices and modules coexist, and module customers often need to coordinate filing together with device customers.
What we do: multi-standard RF consistency pre-testing, band pruning and power calibration rectification, network access license filing and carrier onboarding documentation, EMC and safety rectification, and coordinated device-plus-module filing design.
Broken down by product form, so you can see at a glance which certificates and test items apply:
| Sub-category | Typical products & technical features | Core compliance items | Special & value-added |
|---|---|---|---|
| Mobile terminals | Phones, tablets, CPE; 5G multi-mode multi-band | SRRC; CTA network access license; CCC; SAR; GB 4943.1 | Carrier onboarding tests; 5G band specials; international roaming compatibility |
| Communication modules | Cellular, NB-IoT and RedCap modules | SRRC (scope assessed by module form); CTA (when connecting to the public network independently) | Coordinated module/device filing; band pruning and certification-scope optimisation |
| Network equipment | Routers, switches, APs, ONUs; Ethernet + optical + Wi-Fi | SRRC;CCC;EMC(GB/T 9254) | Carrier central-procurement qualification tests; PoE and thermal design |
| Base-station accessories | RRU, AAU, antennas, repeaters, indoor distribution | SRRC type approval; radio frequency use compliance | Base-station special testing; RF consistency and spurious testing |
“Core compliance items” are what regulations or industry access require; “special & value-added” items are supplementary work that strengthens competitiveness in tenders, central procurement and channel access. The table shows common cases; in practice each item is verified against the product function list and the current catalog.
All of these have caused rework in real projects — avoiding them early saves 2–4 weeks:
Formal testing takes place at designated laboratories; before submission we run baseline checks in our own RF anechoic chamber and EMC lab, so fixable issues are solved in-house.

Pre-testing is not a formality. In projects on this line, spurious emissions, harmonics and EMC account for most rework, and 3–5 days of baseline testing up front often saves a whole round of laboratory queuing.
We review the datasheet, antenna documents and network topology, then issue a written determination: which certificates are needed and whether units can be combined.
Baseline runs in the anechoic chamber and EMC lab; over-limit items are fixed first, avoiding a queued formal test that gets returned.
Samples go out per the designated laboratory's schedule; we track progress and rectify non-conforming items.
Document submission, formal review, certificate issuance and marking instructions — each milestone is shared with the project owner.
Overall reference timeline 12–20 weeks, compressible with parallel filing; structural changes or retests extend it accordingly. Fees are quoted item by item according to certification scope and number of models; reference ranges are subject to our written assessment.
Representative clients on this line: Wingtech Technology, Fibocom, Unionman Technology. Specific project models and progress are subject to mutual agreement.
Industry benchmarks: Huawei, ZTE, FiberHome, H3C, Ruijie Networks, TP-LINK, Tenda, Tianyi Communication, Gongjin Electronics, CIG, Raisecom, Comba Telecom, Tongyu Communication, Baicells, Quectel, Meig Smart, Neoway, Sunsea AIoT, Gosuncn.
Policy positions change; below are the articles and community threads we have compiled for this line: