| Langfang Ouye Energy saving Technology Co., Ltd | 2022-01-06 | Hard Foam Polyurethane Insulation Board, Foam Glass Plate, Steel Skeleton Lightweight Plate | 3000K CNY | 対応 |
| Langfang Rongte Building Materials Group Co., Ltd | 2014-11-03 | Hard Foam Polyurethane Insulation Board, Explosive Bolt Traction Cable, Waterproof Backing Board | 16000K CNY | 非対応 |
| Hebei Jiuce New Building Materials Co., Ltd | 2020-02-28 | Hard Foam Polyurethane Insulation Board, Eps Polystyrene Line, Integrated Insulation And Decoration Board | 3000K CNY | 非対応 |
| Foshan Hongxin Dacai Steel Plate Co., Ltd | 2023-03-14 | Hard Foam Polyurethane Insulation Board, Polyurethane, Silicon Rock Slab | 5000K CNY | 対応 |
| Guangzhou Heqiang HVAC Materials Co., Ltd | 2007-03-12 | Hard Foam Polyurethane Insulation Board, Flexible Aluminum Foil Tube Sheath, Shock Absorption And Insulation Materials | 300K CNY | 非対応 |
| Langfang Aofei Energy saving Technology Co., Ltd | 2025-02-11 | Hard Foam Polyurethane Insulation Board, Polyphenylene Board, Rock Wool Board | 5000K CNY | 非対応 |
| Langfang Huayu Innovation Technology Co., Ltd | 2003-09-01 | Hard Foam Polyurethane Insulation Board, Polyurethane Insulation Board, Double Sided Aluminum Foil Polyurethane Sheet | 10000K CNY | 非対応 |
| Langfang Ningyu Thermal Insulation Materials Co., Ltd | 2018-10-25 | Hard Foam Polyurethane Insulation Board, Phenolic Board, Glass Wool Blanket | 10000K CNY | 非対応 |
| Langfang Zhipan Energy saving Technology Co., Ltd | 2025-01-23 | Hard Foam Polyurethane Insulation Board, Polyurethane Composite Board, Thermal Insulation Board | 1000K CNY | 非対応 |
| Langfang Huiyu Thermal Insulation Materials Co., Ltd | 2021-09-15 | Hard Foam Polyurethane Insulation Board, Polyurethane Pipe Shell, Glass Wool Blanket | 10000K CNY | 非対応 |