| Yong Chiang Piston Co., Ltd. |
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 | Manufacturer of pistons liner kits, valves for cars, tractors, agricultural machines, snowmobiles extends into North, Central & South America, Europe, Japan, New Zealand, Australia and Africa since 1989. Type of engine parts includes piston rings, liners, gaskets and engine valves, etc. |
| De Lion Co., Ltd. |
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 | Manufacturer of hydraulic seals, oil seals & oil rings for excavators, breaker parts, cylinder packing kits, bulldozers, folklifts, trucks and crane carriers exported worldwide. |
| Sun Mines Electrics Co., Ltd. |
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 | Manufacturer of various pumps of vacuums, magnetic air, roots, blowers, rotary blowers, ring well, sewage pumps exported to Americas, Europe, Asia and worldwide. |
| Zhong-Gang Auto Accessories Co., Ltd. |
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 | Manufacturer of automotive/ diesel truck/ heavy-duty machine parts, including fuel/ exhaust/ transmission system, chassises, front& rear axles, suspension, brakes, and more. |
| Lan Shiuon Ptfe Industry Co., Ltd. |
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 | Manufacturer of PTFE products such as PTFE ball valves, diaphragms, seals, automobile PTFE parts, hydraulic pressures, electronic parts and semiconductor PTFE parts since 1988. Acquired ISO 9001 certification. |
| Cheng Shing Piston Co., Ltd. |
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 | Manufacturer of vehicle parts & accessories for pistons of combustion engine. |
| Poli-Auto Group. |
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 | Manufacturer of car spare parts and piston ring of power, install, engine; engine gasket sets, engine gasket kits, valve seals, fuel pumps, cylinder liner sleeves, valve system, valve stem seal, etc. Acquired ISO9002 in 1998 and QS 9000 certification in 2002. |
| Alfot Technologies Co., Ltd |
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 | Manufacturer of aluminium forging, aluminum forging, hot forging, forging. |
| Hassan Motor Corporation |
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 | Manufacturer of auto parts, including engine parts, suspension parts, air conditioning parts, auto body parts and electric parts. |
