- HCS-Pre-sales-TP&VC
- HCS-Pre-Sales-IP Network(Datacom)
- HCS-Pre-sales-Transmission Network
- HCS-Pre-sales-Server
- HCS-Pre-Sales-IP Network(Security)
- HCS-Pre-sales-Storage
- HCS-Pre-sales-Cloud
- HCS-Pre-sales-IDS
- HCS-Pre-Sales-Big Data
- HCS-Pre-sales-Bidding
- HCS-Pre-Sales-PV
- HCS-Pre-sales-IP
- HCS-Pre-sales IT
- HCSA-Presales-Transmission & Access
- HCS-Pre-sales-Specialist-EC
- HCS-Pre-sales-Service Solution
- HCS-Pre-sales-IP(Security)
- HCS-Pre-sales