1. Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your wishiot JJ9222 Oil Refineries 3D Building Block Model. This set is part of the Petroleum Engineering series, designed to offer an engaging and educational building experience.
Product Type: Precision MOC Scale Kits (Mechanical Building Blocks)
Primary Function: Structural scale modeling, hardware prototyping.
2. Safety Warnings
2.1. General Safety Precautions
- Choking Hazard Statement: ATTENTION! Not suitable for children under 36 months due to small interlocking pieces. Parental supervision is mandatory at all times. Keep parts stored safely out of reach of minors under 14 years old.
- Unboxing Protocol: Dispose of transparent outer plastic polybags instantly post-unboxing to avert unexpected infant suffocation hazards.
- Operating Limits: Do not expose raw internal electronics, copper paths, or mechanics to wet environments, ambient dew corridors, or direct acid fumes to mitigate internal breakdown. (Note: This warning is general for universal products; for this building block set, avoid exposing plastic parts to extreme temperatures or corrosive chemicals.)
2.2. Recycling & Disposal
ATTENTION: RECYCLING EFFICIENCY & LITHIUM-ION BATTERY RISK (Note: This product is a building block set and does not contain a Lithium-Ion battery. This warning is part of a universal manual and applies to other products in the series that may contain such components.)
For disposal of plastic components, please check your local authority's guidelines for plastic recycling. Do not place obsolete hardware variants into typical domestic trash bins.
3. Setup and Assembly
Your JJ9222 Oil Refineries model comes with a comprehensive paper manual to guide you through the assembly process. Please follow the steps outlined in the included manual carefully.
- Preparation: Unpack all components and verify that all 734 pieces are present according to the parts list in your paper manual.
- Assembly Advice: Carefully check line graphics inside the digital manual paths (or included paper manual). Do not force high-interference structural pins together to preserve composite material integrity.
- Step-by-Step Construction: Follow the numbered steps in the paper manual. Each step illustrates which pieces to use and how to connect them.
- Attention to Detail: Pay close attention to the orientation and placement of each brick to ensure structural stability and accurate representation of the model.

Figure 3.1: Assembled JJ9222 Oil Refineries Model

Figure 3.2: Close-up of JJ9222 Model Details
4. Operating Instructions
This product is a static display model. Once assembled, it is ready for display. No specific operational steps are required beyond the initial construction.
- Display: Place the completed model on a stable, flat surface away from direct sunlight or extreme temperatures.
- Interaction: The model is designed for display. While durable, excessive handling or rough play may cause parts to detach.

Figure 4.1: The JJ9222 model as part of the Petroleum Engineering series
5. Maintenance
- Cleaning: To clean the model, gently wipe with a dry, soft cloth. For stubborn dust, a slightly damp cloth can be used, followed by immediate drying. Avoid harsh chemicals or abrasive materials.
- Storage: If disassembling for storage, keep all pieces in a secure container to prevent loss. Store in a cool, dry place away from direct sunlight.
- Part Replacement: If any parts are missing or damaged, please contact customer service for assistance.
6. Troubleshooting
- Missing or Damaged Parts: If you find any parts missing or damaged upon opening the package, please contact customer service immediately with your order details.
- Assembly Difficulties: If you encounter difficulty connecting pieces, ensure you are using the correct parts and applying gentle, even pressure. Do not force pieces, as this may damage them. Refer to the paper manual for detailed diagrams.
- Model Instability: If the assembled model feels unstable, re-check the connections of the base and critical structural components. Ensure all pieces are fully interlocked.
7. Specifications
| Attribute | Detail |
|---|---|
| Model Number | JJ9222 |
| Product Name | Oil Refineries |
| Number of Pieces | 734 pcs |
| Main Material | ABS Plastic |
| Recommended Age | 14+ years (as per MOC Kits safety guidelines) |
| Packaging Dimensions | 26.5 cm (L) x 8 cm (W) x 33 cm (H) |
| Assembled Model Dimensions | Approx. 25.6 cm (L) x 20 cm (W) x 21.8 cm (H) |
| Origin | Mainland China |

Figure 7.1: Packaging and Assembled Dimensions for JJ9222
8. User Tips
No specific user tips from reviews or Q&A are available at this time. However, general tips for building block enthusiasts include:
- Organize your pieces before starting assembly to make the process smoother.
- Take breaks if you feel frustrated; sometimes a fresh perspective helps.
- Double-check each step against the manual's diagrams to avoid errors that might require backtracking.
9. Warranty and Support
9.1. Manufacturer Information
Manufacturer: Shenzhen Maker Dream Technology Co., Ltd.
Address: 3rd Floor, Building 81, Hekan Industrial Zone, No. 41 Wuhe South Road, Bantian, Longgang District, Shenzhen, Guangdong, 518000, China
Phone: +86-13534021879
Email: 3929935415@qq.com
9.2. EU Authorized Representative
Representative: eVatmaster Consulting GmbH
Address: Bettinastr. 30, 60325 Frankfurt am Main, Germany
Phone: 004-96995179070
Email: contact@evatmaster.com
9.3. Technical Help & Customer Support
For specific schematic access, configuration data scripts, missing block elements replacements, or volume commercial discounts, please reach out via our official hubs:
- Platform Messaging: Contact our team directly through your active AliExpress Order Chat Console.
- Direct Communications: WhatsApp Engineering Support: +86 13534021879 | E-Mail Hub: 3929935415@qq.com
A PDF version of the Universal Product Safety & User Manual is available for reference: Universal Product Safety & User Manual (PDF)
10. Directives & General Compliance
The product architecture lines comply with:
- General Product Safety Regulation (EU) 2023/988 (GPSR)
- European Toy Safety Directive 2009/48/EC (where matching scale scopes)
- Electromagnetic Compatibility (EMC) Directive 2014/30/EU (Note: This applies to electronic components, not typically to passive building blocks.)
- RoHS hazardous substance limitations
- WEEE directives (Note: This applies to electronic components, not typically to passive building blocks.)