| 1 | Large-scale industrial boiler producer | High-capacity fire-tube and packaged steam boilers | 10–35 t/h steam; 7–29 MW hot water | 96–99% condensing; 92–98% non-condensing | Natural gas, dual-fuel options; low-NOx premix or modulating burners | Approximately 300–600 boiler units/year | Food processing, textile dyeing, chemical processing, district heating | Chinese pressure-vessel requirements, GB/T 16507 series, ISO 9001, CE options |
| 2 | Industrial steam-system specialist | Oil-and-gas-fired fire-tube steam boilers | 2–20 t/h steam; 1.4–14 MW | 92–98% | Natural gas or light oil; fully automatic forced-draft burners | Approximately 250–500 boiler units/year | Pharmaceutical manufacturing, breweries, paper mills, hospitals | GB/T 16507, GB 50041 design practice, local emissions-control requirements |
| 3 | Condensing boiler technology producer | Stainless-steel condensing hot-water boilers | 0.7–14 MW heating output | 98–109% based on lower heating value | Natural gas; premix modulating burners with weather compensation | Approximately 400–900 boiler units/year | Commercial complexes, hotels, schools, residential heating networks | GB 25034, energy-efficiency labeling requirements, ISO 9001 |
| 4 | Modular heating-system manufacturer | Containerized and cascade hot-water boiler systems | 0.5–10 MW per module; up to 40 MW cascaded | 96–108% based on lower heating value | Natural gas; multiple low-NOx modules with lead-lag controls | Approximately 350–800 modules/year | Urban district heating, logistics parks, campuses, public buildings | GB 25034, GB 50041, electrical safety and factory-acceptance standards |
| 5 | Compact commercial boiler producer | Wall-mounted and floor-standing gas boilers | 24–1,600 kW per unit | 94–108% based on lower heating value | Natural gas; premix burner, automatic ignition and flame supervision | Approximately 1,000–3,000 units/year | Apartment buildings, restaurants, retail facilities, small factories | GB 25034, gas-appliance safety requirements, ISO 9001 |
| 6 | Textile and process-heating boiler producer | High-pressure packaged steam boilers | 1–15 t/h steam; design pressure commonly 1.0–2.5 MPa | 90–98% | Natural gas; proportional-control burner with oxygen-trim options | Approximately 180–400 boiler units/year | Textile finishing, garment production, rubber processing, laundries | GB/T 16507, pressure-vessel inspection, site commissioning requirements |
| 7 | Food and beverage boiler-system supplier | Low-pressure steam and thermal-oil heating boilers | 0.5–8 t/h steam; 0.35–5.6 MW thermal output | 90–97% | Natural gas; automatic burner management and feedwater control | Approximately 220–500 boiler units/year | Dairies, breweries, edible-oil plants, food sterilization and cooking | GB/T 16507, food-factory hygiene requirements, ISO 9001 |
| 8 | Low-emission municipal heating equipment producer | Low-NOx hot-water and steam boilers | 2–20 MW hot water; 2–15 t/h steam | 94–99% | Natural gas; ultra-low-NOx premix or staged-combustion burners | Approximately 150–350 boiler units/year | Municipal heating, public housing, industrial parks, environmental projects | GB 13271 emission limits, GB 25034, regional ultra-low-emission standards |
| 9 | Custom-engineered process boiler manufacturer | Skid-mounted steam, hot-water and combined heating packages | 1–30 t/h steam; 1–25 MW hot water | 91–98% | Natural gas, dual-fuel or biogas-ready configurations | Approximately 100–250 engineered systems/year | Petrochemicals, electronics, construction materials, specialty chemicals | GB/T 16507, project-specific pressure and hazardous-area requirements |
| 10 | Export-oriented packaged boiler producer | Skid-mounted fire-tube and condensing boiler systems | 1–25 t/h steam; 0.7–18 MW hot water | 93–99% | Natural gas; fully automatic burners with remote monitoring | Approximately 120–300 boiler units/year | Overseas factories, hotels, hospitals, commercial and light industry | Chinese pressure-vessel standards, ISO 9001, CE or ASME options by project |