| Hejian Jiake Thermal Insulation Materials Co., Ltd | 2018-07-06 | Silicate Tube, Rock Wool Insulation Board, Acoustic Cotton Insulation Roll | 1880K CNY | ไม่รองรับ |
| Langfang New Era Chemical Building Materials Co., Ltd | 1998-09-22 | Silicate Tube, Waterproof Backing Board, Foam Glass Tube | 120000K CNY | ไม่รองรับ |
| Dongguan Ouke Thermal Insulation Materials Co., Ltd | 2017-07-25 | Silicate Tube, Glass Wool Tube Series Products, Rock Wool Felt Series Products | 500K CNY | ไม่รองรับ |
| Langfang Xutong Thermal Insulation Materials Co., Ltd | 2013-03-27 | Silicate Tube, Aluminum Sheet Insulation, Aluminum Magnesium Insulation Pipe | 1000K CNY | ไม่รองรับ |
| Langfang Jinbang Security Fireproof Materials Co., Ltd | 2018-11-26 | Silicate Tube, Explosion Venting, Explosion-Proof | 500K CNY | ไม่รองรับ |
| Langfang Senbo Thermal Insulation Building Materials Co., Ltd | 2012-12-05 | Silicate Tube, Polyurethane Edge Sealing Rock Wool Composite Board, Thermal Insulation Decorative Board | 10000K CNY | ไม่รองรับ |
| Langfang Yueheng Thermal Insulation Materials Co., Ltd | 2014-07-03 | Silicate Tube, Silicate Board, Silicate Board/Pipe | 20000K CNY | ไม่รองรับ |
| Langfang Xinying Thermal Insulation Materials Co., Ltd | 2015-05-04 | Silicate Tube, Inorganic Fiber Spray Cotton, Rock Wool Board | 2000K CNY | ไม่รองรับ |
| Hebei Xinmeisi Insulation Engineering Co., Ltd | 2023-05-04 | Silicate Tube, Rock Wool Pipe Shell, Non Dismantling Structural Integrated Board | 10080K CNY | ไม่รองรับ |
| Langfang Pincheng Energy saving Technology Co., Ltd | 2024-04-01 | Silicate Tube, Aluminum Silicate Tube, Rubber And Plastic Board | 2000K CNY | ไม่รองรับ |