Economy and Transportation
- CARICOM Single Market, the first phase of CARICOM Single Market and Economy, a single market union between most Caribbean States
- Chartered Semiconductor Manufacturing, a semiconductor foundry in Singapore
- Chlorosulfonated polyethylene, DuPont synthetic rubber marketed as Hypalon
- Chopped strand mat, a form of glass-reinforced plastic (fiberglass)
- Clearing and Settlement Mechanism
- Apollo Command/Service Module, a part of the Apollo space program
- Customer Service Manager, lead position in the customer service occupation
- C.S.M., a Dutch maker of baking supplies.
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