SALT IRRIGATING AGENT INDUSTRIAL ENZYMES PREPARATION LUBE BASE OIL DIESEL ENGINE OIL MATERIAL VERTICAL PLANE EMERY CLOTH DISC VARIABLE FREQUENCY CONSTANT PRESSURE WATER SUPPLY EQUIPMENT LIQUID LEVEL SINGLE CONTROL ELECTRIC CONTROL CABINET TEMPERATURE CONTROL ELECTRIC CONTROL CABINET PRESSURE CONTROL ELECTRIC CONTROL CABINET TIME CONTROL ELECTRIC CONTROL CABINET AIR CONDITIONER PUMP ELECTRIC CONTROL CABINET FIRE FIGHTING ELECTRIC CONTROL CABINET INTEGRATED CIRCUIT FOR ELECTRONIC SOUND CHECK DEVICE ELECTRONIC SWITCH CIRCUIT FOR SOUND CHECK DEVICE MACHINERY FITTINGS FORGINGS CHEMICAL PRODUCTS ACRYLIC ACID SODIUM HYDROGEN SULFITE STEEL CASTINGS ADDITIVE ABRASIVE BELT IMPELLER WITH HANDLE LIQUID LEVEL SWITCH SOLVENTS MACHINE OIL CRANKSHAFT HYDRAULIC OIL DIESEL ENGINE OIL GASOLINE ENGINE OIL ELECTRODYNAMIC TYPE LOUDSPEAKER POLYESTER STAPLE FIBRES CASTING (PIPE FITTING) PLASTIC PLANE EMERY CLOTH DISC GRID PLANE EMERY CLOTH DISC SPECIAL OIL PRODUCT CHUCK TYPE IMPELLER GRINDING DISK