Diversifying to infrastructure and other potential business investment is compliment to ratch’s enterprise values and creates steady and sustainable income.
Its focus covers fundamental infrastructures such as transportation and utility projects such as service water production. Nevertheless, the company explores investment in new s-curve business and healthcare service.

| Project /Company | Location | Nature of business | Share holding | Equity investment: (million baht) |
|---|---|---|---|---|
| Northern Bangkok Monorail Co., Ltd. |
|
MRT Monorail Pink Line (Khae Rai-Min Buri), provides operation and maintenance services for MRT Monorail Pink Line Project (Khae Rai-Min Buri)
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|
10% | 1,440.00 |
| Eastern Bangkok Monorail Co., Ltd. |
|
MRT Monorail Yellow Line (Lat Phrao-Samrong), Provides operation and maintenance services for MRT Monorail Yellow Line Project (Lat Phrao-Samrong)
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|
10% | 1,440.00 |
| BGSR 6 Company Limited |
|
M6 Intercity Highway (Bang Pa-in - Nakhon Ratchasima), Provides operation and maintenance services for the fee-collection system of M6 Highway
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|
10% | 100.00 |
| BGSR 81 Company Limited |
|
M81 Intercity Highway (Bang Yai - Kanchanaburi), Provides operation and maintenance services for the fee-collection system of M81 Highway
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|
10% | 85.00 |
| Asia Water Co.,Ltd. |
|
40% | 179.11 | |
| Songkhla Biofuel Co., Ltd. |
|
40% | 0.40 | |
| Bangkok Aviation Fuel Services Public Co., Ltd. |
|
Provides integrated aviation fuel services and invests in domestic and overseas renewable energy businesses
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|
15.53% | 2,712.14 |
| Phufai Mining Co.,Ltd. |
|
37.5% | 630.00 | |
| Siphandone-RATCH LAO Co., Ltd. |
|
25% | 57.91 | |
| Principal Capital Public Company Limited (PRINC) |
|
10% | 1,557.71 | |
| Principal Healthcare - Sakhon Nakhon Co., Ltd. |
|
25% | 75.00 | |
| Principal Healthcare - Mukdahan Co., Ltd. |
|
25% | 75.00 | |
| Bangkok Chain International (Lao PDR) Co., Ltd. |
|
9.91% | 190.00 | |
| Innopower Co., Ltd. |
|
30% | 180.00 | |
| Chubu Ratchaburi Electric Service Co., Ltd. |
|
100% | 10.00 | |
| EGAT Diamond Service Co., Ltd. |
|
10% | 62.30 | |
| RATCH-Lao Services Co., Ltd. |
|
99.99% | 336.86 | |
| EDL-Generation Public Company |
|
Securities investment in Lao Securities Exchange via subsidiaries - RATCH-Lao Services Co., Ltd. (5.65%) and RH International (Singapore) Corporation Pte. Ltd. (4.46%)
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|
10.11% | 3,312.88 |