Lacquer is hard and glossy but is also brittle so it may be dented or chipped. Avoid hard blows. Avoid use of water unless furniture label recommends it. The newer synthetic lacquers are more durable, however older lacquered pieces and many imports have finishes affected by some solvents, so test every product first on an inconspicuous area.
Regularly you will want to dust with a soft, dry cloth. Never use oiled or treated cloths on lacquered finishes. Some finishes can be wiped with a damp (not wet) cloth, followed at once by rubbing with a dry cloth, (test first in inconspicuous spot) to remove fingerprints and smudges. A solvent-based furniture cleaner may be useable on many finishes but allways test first. Apply liquid wax on occasion to maintain a gloss,
When heavy cleaning is called for use a solvent base furniture cleaner. Apply with soft cloth in one hand, and wipe at once with soft cloth in other hand, doing only a small area at a time. An oil soap may be satisfactory on some finishes but test first to be sure it is OK with finish. Protect with liquid wax or polish to maintain a gloss.