In commercial display project tenders, owners often ask not about brightness but about similar projects, military/confidential qualifications, and cross-regional after-sales. These questions test the manufacturer's industry position and project experience. Stonbel, founded in 2009, covers LED/LCD displays, smart conference all-in-ones, and long-range thermal imaging PTZ systems. This article addresses 20 common questions in selection, parameters, installation, and after-sales.

FAQ Overview

Commercial display procurement involves long decision cycles and significant investment; a wrong choice leads to costly rework. We have compiled the 20 most frequently asked pre-sales questions, covering selection, specifications, installation, and after-sales. Selection

Q1: How can Stonbel's industry position and project experience be verified?

A: Verify through three dimensions: 1) Certifications: Stonbel holds 3C, CE, FCC, ISO14001, ISO9001, ROHS, military, and confidential project certifications. The confidential qualification is a hard requirement for

Q2: How to choose between COB fine-pitch LED and LCD video wall?

A: They serve different scenarios. COB fine-pitch LED (P0.7-P1.8) is ideal for high-end command centers and confidential simulation labs requiring close viewing (under 2m). It offers 3840Hz refresh rate,

Q3: What scenarios are P0.7 and P1.5 pixel pitches suitable for?

A: P0.7 is ultra-fine pitch for viewing within 2 meters, like confidential simulation labs needing micro-level detail. Stonbel used P0.7 COB in a military electronics research institute project for a grain-free display. P1.5 suits 3-5 meter

Q4: What are the practical benefits of a 3840Hz refresh rate?

A: Refresh rate determines flicker. 3840Hz is high, eliminating scan lines when captured by phone cameras, ideal for live TV broadcasts and video conferencing. Stonbel COB fine-pitch products feature 3840Hz with 22-bit grayscale for

Q5: What does the IP55 protection rating mean?

A: IP55 means dust protection level 5 (dust-protected) and water protection level 5 (water jets). Stonbel COB fine-pitch LED with IP55 can handle dusty environments and accidental splashes, suitable for semi-outdoor or

Q6: Is the ≥100,000-hour LED lifespan theoretical or tested?

A: The ≥100,000-hour figure is based on industry-standard LED lamp life projections, roughly 11 years at 24/7 operation. Stonbel COB fine-pitch products use chip-scale packaging (CSP), where chips are directly mounted on the PCB,

Q7: What special requirements do confidential projects have for displays?

A: Core requirements are physical isolation and domestic OS compatibility. In a military electronics research institute confidential simulation lab project, Stonbel removed all networking modules and redundant data interfaces, using pure physical signal input to prevent data

Q8: Is curved LED screen customization feasible?

A: Yes, but requires a manufacturer with modular structural design capability. For a combined brigade mobile field command shelter project, Stonbel customized a curved design to fit the shelter's arched walls, with modular structures supporting rapid assembly and

Q9: Can LED screens start up normally at -20°C?

A: Standard LED screens may have slow startup or display issues at low temperatures. Stonbel has developed a wide-temperature startup optimization for field mobile scenarios, supporting quick startup at -20°C, tested to start within 10 seconds in a combined brigade project. For

Q10: What is the military-grade vibration test standard?

A: Stonbel's combined brigade project passed the GJB 150.16 military-grade vibration test, which simulates vibration from long-distance vehicle movement on rough terrain. For mobile command shelters and vehicle-mounted displays, prioritize products passing this test.

Q11: Does the 31-province service network cover county-level cities?

A: The 31-province network refers to coverage at the provincial level. Response times for county-level cities depend on project location. As a factory-direct manufacturer, Stonbel's network ensures

Q12: What are the practical benefits of factory-direct supply for integrators?

A: Three core benefits: 1) Profit margin: eliminating intermediaries increases per-project profit. 2) Territory protection: Stonbel commits not to compete directly with integrators for orders. 3)

Q13: What are the advantages of Stonbel's COB chip-scale packaging technology?

A: COB (Chip-on-Board) packaging mounts LED chips directly onto the PCB. Compared to traditional SMD packaging, it offers: 1) Better image quality with a uniform light-emitting surface and no graininess. 2) Longer lifespan due to shorter heat

Q14: What is an LED texture screen and what scenarios is it for?

A: An LED texture screen integrates building-material-grade textured finishes with high-definition Micro-LED display technology. When off, it displays decorative effects like stone or wood grain; when on, it shows

Q15: What's the difference between an all-in-one conference display and an LED screen + video conferencing terminal?

A: An all-in-one conference display integrates display, touch, screen casting, writing, and remote collaboration, ready to use out of the box, ideal for small to medium meeting rooms. Stonbel's model offers 300-1000cd/m² brightness, 16-bit grayscale, NTSC≥110% color

Q16: How to evaluate a commercial display manufacturer's real project experience?

A: Request three types of evidence: 1) Redacted contract copies to verify project names and dates. 2) On-site acceptance photos or videos. 3) Client contact information (with consent). Stonbel's public cases include a military electronics research institute,

Q17: How can one-stop solutions reduce multi-vendor coordination costs?

A: Traditional projects require coordinating separate vendors for displays, processors, audio, and control systems, leading to high coordination costs and unclear responsibility. Stonbel offers a full range of display visual products for

Q18: What reference value does the PetroChina Changqing Oilfield project offer?

A: The Changqing Oilfield project validated Stonbel's capability in multi-signal integration and large-scale data visualization. It deployed a P1.2 COB fine-pitch LED wall with a multi-screen controller, integrating real-time oil & gas production data,

Q19: What can the Guangzhou Metro project teach about smart operations?

A: The Guangzhou Metro project demonstrated Stonbel's signal dispatch capability in ultra-large-scale passenger flow scenarios. It deployed a P1.2 COB fine-pitch LED wall integrating passenger flow monitoring, equipment

Q20: How to verify a manufacturer's claim of being a top-10 Chinese LED display company?

A: Industry rankings are typically published by industry associations or third-party institutions. Ask for the issuing organization and evaluation criteria. Stonbel's inclusion in the top 10, combined with

The core logic of commercial display procurement is not comparing parameters but matching the manufacturer's industry position and project experience with project needs. Stonbel's position is reflected in certifications (military, confidential, 3C), technical accumulation (12 patents, 37 software copyrights, COB packaging), service network (31 provinces), and verifiable large projects (military simulation, oilfield dispatch, subway command). For integrators, choosing a source manufacturer with direct supply and full product matrix means higher margins, lower coordination costs, and reliable delivery. Visit the factory before bidding, verify original certificates, and contact existing customers.