HT-GJ30 vs PETRA
Side-by-side comparison of HT-GJ30 (Zhengzhou Hento Machinery Co., Ltd.) and PETRA (MetraLabs) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Hospitality & F&B buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- HT-GJ30China
- PETRA—
Year First Available
- HT-GJ30—
- PETRA2013
Verified Deployments
- HT-GJ300 Deployments
- PETRA0 Deployments
Layer 2: Operational
Price Range (USD)
- HT-GJ30$1,230
- PETRAContact for quote
Battery / Shift Runtime
- HT-GJ3012 hrs
- PETRA—
Availability Status
- HT-GJ30ACTIVE
- PETRAACTIVE
Physical
Payload
- HT-GJ30300 kg
- PETRA—
Robot Weight
- HT-GJ3065 kg
- PETRA—
Compartment Type
- HT-GJ30—
- PETRAopen trays
Dimensions
- HT-GJ301650*580*550
- PETRA—
Navigation & Safety
Navigation Type
- HT-GJ30other
- PETRAlidar slam,natural landmark
Power
Battery Runtime
- HT-GJ3012 hrs
- PETRA—
Auto Docking
- HT-GJ30—
- PETRAYes
Integration
Fleet Management
- HT-GJ30—
- PETRAcentralized cloud
Floor Compatibility
- HT-GJ30—
- PETRAhard floor
Commercial
Price (USD)
- HT-GJ30$1,230
- PETRAContact for quote
Warranty
- HT-GJ301 yrs
- PETRA—
| ||
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | China | — |
| Year First Available (values differ) | — | 2013 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $1,230 | Contact for quote |
| Battery / Shift Runtime (priority for Hospitality & F&B buyers) (values differ) | 12 hrs | — |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical | ||
| Payload (priority for Hospitality & F&B buyers) (values differ) | 300 kg | — |
| Robot Weight (priority for Hospitality & F&B buyers) (values differ) | 65 kg | — |
| Compartment Type (values differ) | — | open trays |
| Dimensions (values differ) | 1650*580*550 | — |
| Navigation & Safety | ||
| Navigation Type (values differ) | other | lidar slam,natural landmark |
| Power | ||
| Battery Runtime (priority for Hospitality & F&B buyers) (values differ) | 12 hrs | — |
| Auto Docking (values differ) | — | Yes |
| Integration | ||
| Fleet Management (values differ) | — | centralized cloud |
| Floor Compatibility (values differ) | — | hard floor |
| Commercial | ||
| Price (USD) (values differ) | $1,230 | Contact for quote |
| Warranty (values differ) | 1 yrs | — |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Tray Count, IP Rating, Max Speed, Min Passable Width, Charge Time, Hot-Swap Battery, Elevator API, PMS / POS Integration, Display Size, Voice Interaction, Noise Level, Languages Supported, RaaS / Month
best in categoryweakest in categoryvalues differ
Trade-offs at a glance
Frequently asked
Who makes HT-GJ30 and PETRA?
HT-GJ30 is made by Zhengzhou Hento Machinery Co., Ltd., based in CN. PETRA is made by MetraLabs.
How do HT-GJ30 and PETRA compare on the Robolist Product Score?
HT-GJ30 scores 56/100. PETRA scores 0/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
Are HT-GJ30 and PETRA in the same category?
Both robots are classified as Hospitality Service on Robolist. Filters and ranking treat them as direct alternatives.
What is the realistic total cost of ownership for Hospitality Service robots?
Hardware cost is one input. Hospitality Service TCO also includes integration, training, downtime, and end-of-life. Our breakdown: Service Robot TCO Across Hotels, Restaurants, Retail, and Senior Care.
What should a buyer ask vendors when choosing between HT-GJ30 and PETRA?
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Service Robot SLAs and Contract Red Flags.
Going deeper — picking the right robot
Service Robot TCO Across Hotels, Restaurants, Retail, and Senior Care
9 min readService Robots
Service Robot SLAs and Contract Red Flags
10 min readService Robots
Service Robot Pilot: A 60-Day Evaluation Framework
10 min readService Robots
Build vs buy vs lease: which model fits a first deployment
8 min readChoosing Your First Robot
The hidden specs vendors hope you'll miss
10 min readReading the Spec Sheet
About this comparison
HT-GJ30 vs PETRA compares two robots in the hospitality-service category. All data is sourced from manufacturer spec sheets, verified deployments, and third-party filings; see our methodology for how the Robolist Product Score is calculated.