Used Cable Recycling Plant for sale (8,567)

Year of construction: 2025, condition: new, functionality: fully functional, The ASCO® VS BIG vibrating screen offers a robust and powerful platform for a wide range of screening tasks. Featuring two vibrating motors, it is particularly practical for recycling companies and businesses in the construction, agricultural, and gardening sectors, where many different materials must be processed within tight time frames. Technical Specifications: - System capacity: 40-150 t/h - Maximum bucket width: 3 m - Screening area: 12.8 m² - Drive power: 400 V / 2 x 1.5 kW - Weight: 2457 kg - Width: 3.62 m - Length: 2.41 m - Height: 2.85 m - Loading height: 2.46 m Options: - Bars - Hopper Njdewhmlvspfx Agrodb - Support feet - Separator plate

Year of construction: 2022, operating hours: 3,863 h, condition: excellent (used), functionality: fully functional, machine/vehicle number: 006682, On behalf of our customer, we hereby offer a virtually new OI sorting. This installation can be tested in operation at the customer. The machines consist of; Sorting oi: 0050 Bunker belt with dosing drum BDF1200/2000*10000 0060 Ascending belt to screen HBT1200/1600*14000 0070 Cardboard screen 1640*7000 Platform Cage ladder 0080 Adjustments to existing paper chain belt Ndsdpewq D Dnjfx Agrsb 0090 Switch cabinet included Operating hours only 3863 In consultation with the customer and Bollegraaf, a guarantee is possible under certain conditions See the attached PDF for a precise technical description per machine

Condition: good (used), Jordan MK1 High shear mixing plant Ndjdpfjw Dhhwjx Agrjb Stainless, 100L high shear mixing plant, mayo plant, variable speed high shear mixer, 4Kw, steam jacketed vessel, with Johnson lobe pump outfeed, variable speed pump, mobile, 3Ph

Condition: refurbished (used), Koenig Mini Rex 4000 Futura bun roll machine 2-pockets with formstation DR-RR 400. For the production of rounded, long-rolled, long-rolled and folded as well as flattened products Ndjdpfx Asyidu Hegreb new drum and pistons SKG54-AKG75 weight range 25-160 grams several weight ranges with other drums is possible through the use of combined stamp sizes, on request max. cap. 4000 pcs/h year R 2026 compact design fully automated dividing and rounding of wheat doughs and rye- -wheat doughs with a maximum rye percentage of 40% excellent results with the production of round, long-rolled, long-rolled and folded as well as flattened goods tried-and-tested in thousands of in-store bakeries height-adjustable calibrating head, folding net belts, lower belt and upper belt for ergonomic working with the following functions: transporting, long rolling, pressing flat teflonised collecting drawer for manual product removal high level of operating comfort quick and easy cleaning on account of plug-in elements stainless steel design power supply: 1.5 kW weight approx. 460kg

Year of construction: 2019, condition: new, Preparation of a written offer / cost estimate for a powder coating system from the company Romer. Ndedpsc Sd D Sjfx Agrob

Year of construction: 2006, condition: like new (used), Details on request Ndedpfxefla Emo Agrjb

Condition: new, Year of construction: 2021, Dear customers, To ensure a fast and reliable response to your request, we kindly ask you to contact us preferably by email. Ndsdpfsfn Ndgsx Agrjb This way, we can directly assign your request to the appropriate contact person, collect all information and documents completely, and process your request as quickly as possible. We look forward to hearing from you and will be happy to assist you! Riedex DM-350RV/P Dust Collector Technical data DM-350/P Motor power: 11.0 kW Nominal air flow at 20 m/s: 6927 m³/h Max. air flow: 8000 m³/h Filter cleaning: JET cleaning Residual dust content:

Condition: new, Hydraulic winch HAW1700 with electric valve incl. manual operation and radio remote control for mounting on wood splitters, cranes, mini excavators, tractors, forklifts, mowing tracked vehicles, and telescopic loaders, for use in viticulture and horticulture, agriculture, construction, and forestry, as well as many other applications. Equipped with an electric hydraulic valve and radio remote control. The hydraulic winch HAW1700 can simplify many tasks. Maximum rope capacity of 30 m with 6 mm wire rope. Standard equipment includes 20 m of 6 mm wire rope. ⦁ Pull and position firewood for the wood splitter ⦁ Pull logs onto a trailer ⦁ Pull out tree stumps and trees ⦁ As an auxiliary winch on skidders and small excavators ⦁ As a winch for small tractors and narrow-gauge tractors A robust steel construction with the possibility of mounting on both sides (bottom, rear, top) with M12 threads. This allows for flexible use of the winch. Large, double-bearing rope pulley for long wire rope life. The pulling force is 1700 kg as standard. The winch can be installed in various positions. An optional hydraulic brake is available. Depending on the required pulling speeds and forces, we can offer you different options. Please contact us, and we will be happy to advise you. ⦁ Maximum working pressure: 225 bar peak ⦁ Continuous operating pressure: 175 bar ⦁ Displacement: 400 ccm ⦁ Torque at 225 bar: 870 Nm peak Nedpefn Tvhsfx Agredb ⦁ Torque in continuous operation: 380 Nm ⦁ Maximum pulling force: 1700 kg ⦁ Weight: 49 kg ⦁ Rope speed: 47 m/min at 60 l/min oil flow ⦁ Color: red ⦁ Including hoses from the valve to the motor Dimensions: ⦁ Length: 500 mm ⦁ Length with rope inlet: 570 mm ⦁ Front width: 120 mm ⦁ Rear width: 180 mm ⦁ Bearing width: +30 mm ⦁ Motor width: +200 mm ⦁ Height: 250 mm Included: Radio remote control for the winch. ⦁ Control range: up to 100 m ⦁ Temperature: -35 °C to +80 °C Protection class: IP65

Condition: excellent (used), Numerical Control Power Control + Software Cadmatic 4 Professional N° 1 Infeed roller tracks (ca.) 18,000 mm + (OPTIONAL: Infeeder with chains) Lifting table (mm) 5600 x 2200 VAC loader (sliding bridge) with fan suction for loading special or delicate panels 1° Rear-pusher, with No. 6 clamps/grippers Turning device (rotating unit) at 90° 1° Panel Saw - Max cutting width mm 5600 (cutting line with air cushion) Max blade projection (mm) 170 Scoring Unit (max. diameter saw / power) mm 200 (Kw 2,2) Main Sawing Unit (max. diameter saw / power) mm 570 ( Kw 30) Adjustable speed of the saw carriage (QS) (m/min) 1 - 150 m/min 2° Rear-pusher, with No. 7 (+1) clamps/grippers 2° Panel Saw - Max cutting width mm 2200 (cutting line with air cushion) Nsdpfsf Nkv Sox Agrjdb Max blade projection (mm) 170 Scoring Unit (max. diameter saw / power) mm 200 (Kw 2,2) Main Sawing Unit (max. diameter saw / power) mm 570 (Kw 30) Adjustable speed of the saw carriage (QS) (m/min) 1 - 150 m/min Waste evacuation system with grinder (Kw 19.5) No. 2 Front supporting tables with Air blowing system (mm 800 x 2160) Plastic wheels coated with special material to avoid scratching delicate panels Automatic unloading System of the cut panels (N° 2 roller conveyors) Typ 68/20 and Typ 58/24 + N° 3 tables with motorised belts: 2 x Typ 255/56/2 and 1 x Typ 27/56) Total power Kw 110 ca.

Year of construction: 2023, condition: new, SEMIX M160S4 provides the highest capacity amongst mobile concrete batching plant in the world. SEMIX Mobile 160S4 equipped with 6000/4000 capacity twin shaft concrete mixers. In SEMIX Concrete Mixers NiHard4 or Hardox 450 wearings are used according to the Concrete recipe’s sillicium ratio. Aggregate storage hoppers can be fed by wheeled loaders with a single ramp. Aggregates are weighed in the weighing conveyor which transfers aggregates to the transfer conveyor. Having two separate conveyors providing accuracy in weighing and performance for reaching higher Concrete outputs. Ndedpfx Asgazctsgreb All SEMIX Aggregate Storage hoppers are bent trapezoidal shape for having an extra strength. All SEMIX Concrete Batching Plants are being controlled by a SCADA system with a Schneider PLC integrated. Users can follow all used materials and integrate it their CRM system. SEMIX's engineering team can intervene in the Automation system online to provide service.

Condition: good (used), overall weight: 41,000 kg, Year of construction: 2004, operating hours: 5,500 h, Single-toggle jaw crusher Inlet: 1,000 x 650 mm Finished product: approx. 0/70-0/200 mm Feed hopper, vibrating feeder Ndjdpfx Astpaktogrjb Electric drive with 220 kVA generator Side and main discharge conveyor Overhead magnet

Condition: good (used), functionality: fully functional, Processing plant for (track) ballast Njdpstpamgofx Agrsdb 40 cbm feed hopper with push cart OMT 120 kW impact mill with feed and discharge chute Double-deck screening plant 1,400 x 4,000 m with conveyor and stockpile belts Complete electrical installation

Condition: new, Year of construction: 2025, AL-KO POWER UNIT® 300 P-BP 30 -50 Intake nozzle: 300 mm Engine rated power: 7.5 kW / 3-phase Voltage: 400 V / 50 Hz Maximum volumetric flow rate: 6000 m³/h Nominal volumetric flow rate: 5,089 m³/h Negative pressure: 2,587 Pa Filter area: 30 m² Dimensions (L x W x H) in mm: 3,000 x 1,361 x 2,817 Briquetting capacity: 30 - 50 kg/h Briquet diameter: 50 mm Weight: 1570 kg Machine is brand new and in stock at our warehouse. Ndjdpsh D If Hjfx Agrob - AVAILABLE IMMEDIATELY - Subject to prior sale Location: 54634 Bitburg

Year of construction: 2007, condition: reconditioned (used), Fully automatic dovetail cutting system: Double-pack type Machine has been disassembled Machine is being overhauled Specifications: Wood input length: min. 150 mm max. 1000 mm average 400 mm Wood cross-section: min. 20 x 40 mm max. 80 x 180 mm Wood output length: 6030 mm Max. wood cross-section with a 10 mm dovetail size: Hardwood 120 cm² Softwood 150 cm² Dovetail design: vertical and horizontal Adhesive type: PVAC white glue, two-sided glue application Electrical power: Connection voltage: 400 V Control voltage: 24 V Nodpfed Tipaox Agredb 50 Hz System is completely wired up to the control cabinet. Dovetail length / possible wood cross-section and adhesive type can still be adjusted. Performance: 6 milling stations/min Working height: 960 mm Table width: 600 mm Glue application: double-sided Technical parameters: Input material: Input length of parts (min. - max.): 150-1000 mm Part width (min. - max.): 40-155 mm Part thickness (min. - max.): 20-80 mm Working height: 960 mm Bundle width: 600 mm Glue application: double-sided application (on both sides of the

Condition: refurbished (used), Complete cheese grating line for cheddar or Mozzarella cheese blocks. Ndjdpfx Aep T Tghsgrjb Cheese blocks are cubed and fed to the Cheese grater then up a conveyor dosed with powder and tumbled Arcall Cheese cutter, transfer conveyor, Urschel CC grater, incline conveyor and tumble mixing drum Can produce 1,000 Kg of grated cheese per hour. A Weigh bagging system can be added to the grated cheese line

Condition: new, functionality: fully functional, rope length: 30,000 mm, rope speed: 47,000 mm/min, machine/vehicle number: HAW1700-EV-Funk, Hydraulic winch for wood splitters, cranes, mini excavators, tractors, agricultural vehicles, viticulture, horticulture, and many other applications. The hydraulic attachment winch simplifies many tasks: - Pulling and positioning firewood to the wood splitter - Pulling logs onto trailers - Removing tree stumps and roots - As an attachment winch on forestry cranes and small excavators - As a winch for small tractors and narrow-gauge tractors A robust steel construction with 3-sided mounting options (left, right, rear) and 12 threaded holes offers many possibilities for attaching the winch (threads are cut and painted. They need to be re-cut with a thread tap before use due to the rust protection). A 20 m long and 6 mm thick steel cable is mounted. A large cable pulley ensures a long service life for the steel cable. We mount hydraulic motors from 50 to 630 cc (standard = 400 cc), depending on the speed and pulling force required. Maximum working pressure: 225 bar peak Continuous operating pressure: 175 bar Displacement: 400 cc Torque at 225 bar: 870 Nm peak Torque in continuous operation: 380 Nm Maximum pulling force: 1700 kg Weight: 49 kg Cable speed: 47 m/min at 60 L/min hydraulic oil Color: red Dimensions: Length: 500 mm Length with swivel: 570 mm Front width: 120 mm Ndsdpfx Agodf Ufpsrjb Rear width: 180 mm Bearing width: + 30 mm Motor width: + 200 mm Height: 250 mm The winch is available for mounting or welding. This version includes an electric hydraulic valve, remote control, and hoses to the motor. Article number: HAW1700-EV-Funk

Year of construction: 2017, condition: refurbished (used), functionality: fully functional, Beton2Go self-service system – MA15-2 concrete mixing plant – extensively refurbished and ready for immediate use. We are selling our Beton2Go system due to the purchase of a new one. Technically in very good condition and extensively overhauled. Ideal for a quick start or expansion. Technical data: Year of manufacture: 2017 Capacity: approx. 15 m³/h 0.5 m³ per batch Cement silo with level measurement (online compatible) Operation with retarder possible Self-service with cards (EC format) Refurbishment: Mixing plant: • HMI touch screen renewed • Relays partially new • Wiring new (CEE, industrial plug, network) • Emergency stop and safety switches new • Sensors + mixer flap bearings new • Closure for mixer cover new • Hardox plates: 4/8 renewed (bottom), top in good condition • Belt rollers inspected/repaired • De-rusted, partially sandblasted and painted • Mixer arms repaired, mixer shoes new • Gear oil changed, lubricated • Dust seals + various small parts new Conveyor belt: Nodpszlpv Asfx Agrsdb • Rollers partially new • V-belts new • Gear oil new • De-rusted and painted • Hopper seals new Cement silo: • Wiring new • Filter cleaned • Industrial plug retrofitted • Cleaned externally UVV and DGUV V3 inspection and certification performed before handover. Ready for immediate use, no backlog of investments. Scope of delivery: Mixing plant, conveyor belt, 2x IBC (water + admixture), 2x pumps, spare parts, inspection booklet Requirements: 64A power supply, optional network (VNC remote maintenance) Inspection possible. Transport can be arranged. Price net plus VAT.

Condition: used, Year of construction: 2002, Type of machine: Ultrasonic cleaning device Nedjznt Eajpfx Agrjdb Manufacturer: Finnsonic Model: MC-360/III Year of manufacture: 2002

Condition: good (used), Year of construction: 1972, functionality: fully functional, This processing plant is designed for the production of creams, ointments, gels, pastes, lotions, suppository compounds, etc., with a usable volume of 100 liters. The total volume with the container closed is 123 liters; the minimum fill volume is 35 liters. The system consists of a fully enclosed stainless steel container with double jacket, which can be electrically or water heated/cooled. The container features a lid with integrated mixing units and drives. The mixing vessel is mounted on three castors and can be wheeled out for filling or cleaning purposes. The lid is mounted on a lifting column for hydraulic raising and lowering, enabling convenient cleaning and emptying. It is fitted with an observation window and two inlets with valves, which can also be used for adding other product components. Additionally, an adjustable mechanism is provided for setting the grinding gap of the colloid mill. Technical specifications: Container: Permissible operating pressure: 1 bar / -1 bar Homogenizer: 1,500/3,000 rpm – 1.8/2.5 kW Njdeyx Sxcopfx Agredb Anchor agitator: 19/38 rpm – 1.8/2.3 kW Spiral agitator: 29/58 rpm

Condition: good (used), Cable rack for large cable reels Consisting of 7 uprights Ndedsy I U Tbopfx Agrjb Depth: 0.81 m Bays: 0.75 + 0.75 + 0.855 + 0.855 + 0.945 + 1.05 + 1.05 m width – upright width: 8 x 0.10 m Height: 5.06 m

Condition: excellent (used), Year of construction: 2022, operating hours: 326 h, functionality: fully functional, machine/vehicle number: A20221005, feed length X-axis: 5,500 mm, feed length Y-axis: 1,300 mm, feed length Z-axis: 100 mm, feed rate X-axis: 3 m/min, workpiece weight (max.): 500 kg, working width: 1,300 mm, type of input current: AC, volume flow: 12,000 m³/h, suction capacity: 6,000 m³/h, compressed air connection: 6 bar, A fully automatic coating system in excellent condition is offered for sale, consisting of the following components: 1 -----VEN SPRAY SMART Spray System----- Year of manufacture: 2019 Feed speed: 1.5-4.0 m/min Working speed: 2.0 m/min Working height: 920 ± 20 mm Working width: 1,300 mm Min. workpiece size: 300x100x10 mm Max. workpiece size: 3,600x1,200x50 mm Coating material: Water-based paints, solvent-based paints Spray process: Air, Airmix, Airless 326 operating hours 2-----VEN MOVE TRANSFER----- Njdpfx Agszcmy Uerodb Type: VEN MOVE TRANSFER 180° Year of manufacture: 2022 Length: approx. 6000 mm Width: approx. 8,078 mm Speed: 3.2 m/min Max. load: 20 kg/m 766 operating hours 3 -----VEN TRANS BELT (x3)----- Type: VEN TRANS BELT belt conveyor Year of manufacture: 2022 Length: approx. 5,635 mm Outer width: approx. 1,511 mm Working width: approx. 1,300 mm Conveyor speed: 3.0 m/min Max. load: 20 kg/m 766 operating hours 4 -----VEN TRANS BELT with dust protection hood----- Type: VEN TRANS BELT belt conveyor Year of manufacture: 2022 Length: approx. 3,800 mm Working width: approx. 1,300 mm Working height: 920 ± 20 mm Conveyor speed: 3.0 m/min Max. load: 20 kg/m 5 -----VEN MOVE TRANSFER with drying chamber----- Type: VEN MOVE TRANSFER with drying chamber Year of manufacture: 2022 Length: approx. 6,000 mm Width: approx. 8,078 mm Conveyor speed: 3.0 m/min Max. load: 20 kg/m Drying chamber: Manufacturer: Adolph & Co GmbH Min. exhaust air volume: 1,200 m³/h 6 -----Supply air unit HC12----- Manufacturer: Berliner Luft Recirculation air volume flow: max. 12,000 m³/h Max. heating temperature / heating capacity: 70°C / 174.14 kW 1620 operating hours -----Technical Features----- - Fully automatic coating process - Multi-layer coating programmable - Automatic control of the entire coating process - 6 freely programmable spray guns - Suitable for water-based and solvent-based paints - Suitable for automated coating processes in industrial applications The system was installed in 2022 and was in operation for only about 1 year (326 operating hours in the spray gun drive). It is in very good condition, is fully documented and is ideal for industrial coating processes with high quality requirements. The original investment value in 2022 was approximately €760,000. The selling price is negotiable.

Condition: good (used), Power cable, flat cable, crane cable, rubber hose cable Nedpfx Ajzmtw Togrjdb -Power cable: Flat cable, crane cable, 4-core -Type: 4G 2.5 -Length: 30 m -Transport dimensions: roll Ø 565 x 25 mm -Weight: 8.4 kg

Year of construction: 2023, operating hours: 500 h, condition: like new (used), number of feeding trays: 2, Scope of supply of the system The offer includes: 1. Mixer • Concrete mixer with a capacity of 9 m³. • Mixer screw inside the mixer has been renewed and reinforced. • The mixer is driven by a powerful electric motor. • The mixer is mounted on four load cells (each with a load capacity of 20 t) for precise weighing of the materials to be mixed. 2. Trough screw conveyor 1 • Conveying system for feeding the mixer. 3. Trough screw conveyor 2 • Conveying system for discharging the finished mixed material. 4. Liquid feed • Dosing of liquid components via a pumping system from Flux. Ndjdpfjzmyvijx Agrob 5. Electronic control • Electronic control with a mobile operating unit for weighing and dosing based on the weight increase of the material in the mixer. Mode of operation • The mixer is installed on load cells. The current material weight is displayed on the display at all times. • For example, if a total mixture of 4,500 kg is to be produced, this can be dosed precisely according to a predefined mixing ratio, e.g. 80% main material (3,600 kg), 10% additive (450 kg), 7% additive (315 kg) and 3% additive (135 kg). • The smaller additives are pre-weighed and fed into trough screw conveyor 1 via the additive hopper using a travelling carriage from big bags. • Subsequently, the main material is conveyed into the mixer via trough screw conveyor 1 until the desired total weight of 4,500 kg is reached. • After that, the feed is stopped via the trough screw conveyor. • The mixing process then takes place according to the requirements. In our application, the mixing time was approximately 20 minutes. • After the mixing process is complete, the material is discharged via trough screw conveyor 2. To do this, the direction of rotation of the drive motor is switched at the control panel and the discharge screw conveyor is switched on. • The finished mixture can then be filled directly into containers or loaded into transport vehicles (in our case, a push-off trailer or manure spreader). Mixing process based on weight percentages 1. The main material is fed into the trough screw conveyor via the large stainless steel hopper, which then conveys the material into the mixer. In our case, this consisted of solid components from biogas waste. 2. Additional components can be added directly from big bags onto the main material using a second stainless steel hopper and a traverse. This ensures pre-mixing during the conveying process. In our application, biochar and bentonite were added. 3. Liquid components are sprayed directly into the mixer. In our case, we used EMa (activated effective microorganisms) for this purpose. Optionally, the push-off trailer/manure spreader can be purchased.

Condition: used, Year of construction: 2019, operating hours: 5,532 h, Equipment: ABS, all wheel drive, soot filter, Finished SD2500WS PLUS T4F* weather protection canopy Nedpfx Agjy T Ukdersdb * Air conditioning * Seat heating * Auxiliary heater * Leveling system/cross-slope control * Automatic centralized lubrication system for paver and/or screed * Infinitely variable hydrostatic drive * Front axle is a tandem swing axle * Diesel engine Cummins QSB 6.7 - EUIV(T4f) * All-wheel drive (2 x rear wheels + 4 x front wheels) * Pave Manager 2.0 Advanced * PLC electrical system (CAN bus), ECO mode, 24 V electrical system * Wheel track stone deflector * Mixing material hopper with individual control * Hydraulic front hopper * Support rollers with shock absorption * Reversible slat conveyor with double bars and individual control of conveyor belt halves * Automatic shutdown via mechanical paddles * Hydraulic screw conveyor with height scale * Two reversible screw halves (380 mm) * Ultrasonic sensors in the screw conveyor * Hydraulic screed locking * Side-mounted operator station with weather protection canopy * Variable control panel with push buttons and 7" multifunction display * Two heated Grammer comfort seats * Four LED headlights (2 x front + 2 x rear) * Dynalink Advanced - Telematics system * Hydraulic system for Pave Manager Adv. * SD2500WS THERMO with LightAssist (Paver) ----Vario screed V 5100 TV PM+* Vario screed with gas heating * Basic width 2.55 m, hydraulically extendable to 5.1 m * Compaction system: tamper and vibration * Bottom plate Hardox 500 * Hydraulic adjustment of roof profiles * Two external controls incl. leveling electronics * Leveling system Mobamatic 2+1 * FRONT WHEEL DRIVE CAN BE ACTIVATED FOR WORK ----Additional equipment and accessories* Screw 380 mm 4.42 m * Connection kit V5100/6000 * Rotating beacon * Fire extinguisher * First aid kit * Smoke extraction system * RESTRICTED SD2500WS THERMO * Hydraulic system for Pave Manager Adv. * LightAssist (Paver) * Lighting for screw conveyor * LED headlights screed left + right * 12V socket * TEMPERATURE MEASUREMENT SCREW CONVEYOR * Spray system 25L with hose * High-performance front-wheel drive * Tool set * SetAssist (Transport position) * TRUCKASSIST ADVANCED * Thermomaterial hopper * Folding material guide * Weather protection house * Hydraulic oil drain hose * STVZO - Lift axle * Infrared temperature measurement preparation * Operating manual + parts list (USB) * Operating manual * Parts list * Set of drawings A3 * Leveling system Mobamatic 2+1 * Vario screed V 5100 TV PM+ * Side guards OBT approved (G) PM * Spirit level screed * Holder for cross-slope Moba * Holder for height sensor MobaGrade 1x * Screed width measurement * LightAssist (Screed) * DYNAPLUS12 ----Vehicle number 12111 Errors and prior sale excepted.

Condition: used, functionality: fully functional, Year of construction: 2009, operating hours: 6,000 h, machine/vehicle number: 66642, Coarse material screening plant 6 m³ feed hopper with steel plate belt feeder CAT C4.4 (3054) with 75 kW Double-deck screen box: 3,660 x 1,370 mm Feed capacity: up to 300 t/h Transport weight: approx. 23,000 kg including various spare screen decks Nsdpfxoznl His Agrjdb