Beli Dematic Kurva Rol 90° bekas (23.253)

Kondisi: bekas, Tahun pembuatan: 2008, Transnorm angled infeed/outfeed separator, infeed unit, roller transfer 45°/90°-900-800 RA2236 Year of manufacture: 2008 Conveyor angle (infeed + outfeed): 45° + 45° Overall length (ML): 1150 mm Nominal/outside width (NB): 900 mm Usable width (NUB): 800 mm Conveying speed: please contact us Guodpfxjri Snls Aa Hsg Roller diameter: 50 mm steel + conically plastic-coated rollers Drive: SEW geared motor Electrical data: 0.55 kW, 380–480 V Roller pitch: 75 mm Height: 120 mm, 450 mm with motor Overdrive with chain Optional accessories available: - Support stands - Single-sided and double-sided lateral guides - Frequency inverter for stepless speed control - Ball transfer table for infeed/outfeed operations Prices are net, plus VAT, ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, expert advice, please feel free to contact us. Reach us by phone or email – we are happy to assist with the planning and implementation of your projects. We look forward to hearing from you. Kind regards, The Dr. Sonntag GmbH & Co. KG Team Your specialist and partner for intralogistics.

Kondisi: bekas, Tahun pembuatan: 1995, Transnorm Belt Curve Conveyor 90° Helix Spiral Left 980-800 IR600 RA2044 Technical Data Gsdpfx Aaek Nt Ris Houg Manufacturer: Transnorm Type: 90° Left Belt Curve Year of Manufacture: 1995 Angle: 90° Direction of Travel: Left Internal Radius (IR): 600 mm Usable Width (NUB): 800 mm Nominal/Outer Width (NB): 980 mm Incline: 180 mm per 90°, 720 mm per 360° Conveying Speed (m/s): Infinitely adjustable with frequency converter, between 0.0117 and 0.5167 Electrical Data: 1.5 kW / S1, 380-500 V Scope of Delivery: Without supports and side guides (please request if required) Including frequency converter New belt Optional: Supports Side guides Price plus VAT, ex central warehouse Dr. Sonntag KG 97076 Würzburg For tailored, expert advice, simply contact us. You can reach us by phone or email. We are happy to assist you with the planning and implementation of your projects. We look forward to hearing from you. Best regards, Your Dr. Sonntag GmbH & Co. KG Team Your specialist and contact partner for intralogistics.

Kondisi: bekas, Tahun pembuatan: 1998, Transnorm Gurtkurvenförderer links 90°-780-600-IR600 RA2169 Fabrikat: Transnorm Laufrichtung: 90° linksslaufend Gurtbreite (RB): 600 mm Breite mit Motor (MB): 1020 mm Nenn-/Außenbreite (NB): 800 mm Innenradius (IR): 600 mm Bauhöhe Rahmen (BH): 200 mm Bauhöhe mit Motor (MH): 400 mm V220/380, 0,37kW Fördergeschwindigkeit: Bitte kontaktieren Baujahr: 1998 Optional erhältlich: Stützen Seitenführung einseitig und beidseitig Frequenzumrichter Preise netto zzgl. MwSt. ab Zentrallager Dr. Sonntag GmbH & Co KG, 97076 Würzburg, Deutschland Für eine individuelle, fachmännische Beratung setzten Sie sich einfach mit uns in Verbindung. Kontaktieren Sie uns einfach telefonisch oder per Mail oder besuchen Sie unsere Website Wir helfen Ihnen gerne bei der Planung und Umsetzung Ihrer Projekte. Wir freuen uns darauf von Ihnen zu hören. Mit freundlichen Grüßen Ihr Team der Dr. Sonntag GmbH & Co. KG Ihr Spezialist und Ansprechpartner für Intralogistik Gsdpjq Awytsfx Aa Hjug

Kondisi: bekas, Tahun pembuatan: 2008, Transnorm Belt Curve Conveyor 90°-800-700 IR900 right RA2080 Technical Data: Manufacturer: Transnorm Condition: good (used) Conveying angle: 90° Nominal/outer width (NB): 800 mm Belt width (GB): 700 mm Inner radius (IR): 900 mm Overall height (BH): 210 mm Motor height (MH): 450 mm Motor type: SEW geared motor, SA37/T DT71D4/TH Electrical data: 380-500 V, 0.37 kW Conveying speed: 1st gear 0.67 m/s, 2nd gear 0.25 m/s, 1st gear 0.33 m/s or 1st gear 0.83 m/s Scope of delivery: without supports (available on request) Optional: - Supports - Side guides - Frequency converter for stepless speed control Price plus VAT ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg Gedpfxon Tpvgj Aa Hjug For individual, expert advice, simply contact us. Just call or email us. We are happy to support you with the planning and implementation of your projects. We look forward to hearing from you. Best regards, Your Dr. Sonntag GmbH & Co. KG Team Your specialist and contact for intralogistics.

Kondisi: bekas, de-fi-001 Gjdpfopdv Riox Aa Houg

Kondisi: bekas, Tahun pembuatan: 2012, fi Gedpfxsra Hp Ro Aa Hsug

Kondisi: bekas, Tahun pembuatan: 2008, transnorm-rollenfoerderer-3170-900-850 Gusderg Nz Hepfx Aa Hjg

Kondisi: baru, Tahun pembuatan: 2021, Transnorm belt curve conveyor left 30°-1270-1100-IR900 - NEW Gusdpfxot D R R So Aa Hsg RA2303 Technical specifications: Frame width (NB): 1270 mm Frame width with bearing cover: 1390 mm Frame width with bearing cover and gearbox cover: 1480 mm Belt width (GuB): 1100 mm Overall height (BH): 250 mm Height of bottom-mounted motor: 300 mm Motor height (MH): 550 mm Inner radius (IR): 900 mm Conveying angle: 30° degrees Average conveying speed (v m/s): 1.0 m/s Drive: SEW motor with frequency inverter Electrical data: 50Hz V380-500, kW 1.5 / S1 Belt: KT 96 new Year of manufacture: 2021 Side guide height: 194 mm Optional available: Supports Prices are net plus VAT, ex central warehouse Dr. Sonntag GmbH & Co KG, 97076 Würzburg For individual, expert advice, simply get in touch with us. Contact us by phone or email. We are happy to assist you with the planning and implementation of your projects. We look forward to hearing from you. Best regards, Your team at Dr. Sonntag GmbH & Co. KG Your specialist and partner for intralogistics

Kondisi: baru, Tahun pembuatan: 2021, Transnorm Belt Curve Conveyor Left 90°-600-400-IR1000 - NEW RA2307 Technical Data: Frame width (NB): 600 mm Frame width with cover and motor: 850 mm Belt width (GuB): 400 mm Frame height (BH): 220 mm Height with motor (MH): 350 mm Inner radius (IR): 1000 mm Conveyor angle: 90° degrees Conveying speed (v m/s): 1.0 m/s Drive: SEW geared motor Electrical data: 50Hz V380-500, kW 0.75 / S1 Gjdpfx Aaeuicgzj Hsug Year of manufacture: 2021 Side guide height: 194 mm Optional accessories available: Supports Frequency inverter for stepless speed control All prices are net plus VAT ex central warehouse Dr. Sonntag GmbH & Co KG, Gattingerstraße 11 B & C, 97076 Würzburg For individual and professional advice, simply get in touch with us. Contact us by phone or email. We are happy to assist you with the planning and implementation of your projects. We look forward to hearing from you. Best regards, Your team at Dr. Sonntag GmbH & Co. KG Your specialist and partner for intralogistics

Kondisi: bekas, Knapp roller conveyor 2200-350-280 RA2326 Manufacturer: Knapp Roller width (RW): 280 mm Nominal/Outer width (NW): 350 mm Length: 2200 mm, additional extension segments available Roller diameter: 50 mm Roller pitch: 110 mm Conveyor drive motor: Leroy Somer Electrical data Gujdpfju Rii Iox Aa Hsg 380V, 0.37kW Frame height: 76 mm, 276 mm with motor Please note, the extension element is not driven without a drive station! Optional accessories available: Additional modules for customized length Frequency inverter for stepless speed control Support legs Side guides (single-sided or double-sided) Price: plus VAT, ex central warehouse Dr. Sonntag GmbH & Co. KG 97076 Würzburg For individual, professional advice, please feel free to contact us. Simply get in touch by phone or email. We are happy to assist you with the planning and implementation of your projects. We look forward to hearing from you. Best regards, The team at Dr. Sonntag GmbH & Co. KG Your specialist and contact partner for intralogistics.

Tahun pembuatan: 2008, Kondisi: siap digunakan (bekas), Kami menawarkan mesin pemotong rol Rollerexpress yang siap digunakan, model Roll 0.932/3000, tahun pembuatan 2008. Lebar rol yang dapat digunakan adalah 3000 mm. Rol atas berdiameter Ø 320 mm dan dilengkapi dengan selongsong pemotong PA atau nilon cor. Jarak antar rol dapat diatur secara terpisah di kedua sisi dan dilengkapi dengan tampilan nilai absolut untuk jarak antar rol. Jenis pengoperasian: pengoperasian pengaturan; pengoperasian semi-otomatis; pengoperasian sepenuhnya otomatis dengan sensor optik dan kontrol waktu. Termasuk 5 unit ban berjalan, penghitung, dan peralatan tambahan: rol penyangga untuk rol bawah untuk mengurangi defleksi pada beban tinggi. Penggerak rantai dan motor yang lebih kuat. Termasuk tombol kontrol di kedua sisi. Gedpjz Ag Ukofx Aa Hjug Jika Anda memiliki pertanyaan atau memerlukan informasi lebih lanjut, jangan ragu untuk mengirimkan pesan atau menghubungi kami.

Tahun pembuatan: 1995, Kondisi: siap digunakan (bekas), de_001 Guedpfxeyit Hbs Aa Heg

Tahun pembuatan: 2006, Kondisi: siap digunakan (bekas), Three automated small-parts storage systems (AKL) Siemens Dematic SR-M100 are available. Storage locations: 19,450, payload: 2 x 50 kg per compartment, maximum load unit dimensions (L/W/H): 600mm/400mm/320mm, travel speed: 200m/min, lifting speed: 120m/min, extraction speed: 100m/min. On-site inspection is possible. Available from approx. Q4 2024. Guodpotvgqnjfx Aa Heg

Tahun pembuatan: 2000, Kondisi: siap digunakan (bekas), spritzgiesmaschinen_2024_angebot_2stueck Godpsw Ni Ibjfx Aa Hjug

Kondisi: bekas, Fungsionalitas: berfungsi sepenuhnya, daya: 650 kW (883,75 hp), panjang total: 48.000 mm, lebar total: 8.720 mm, tinggi total: 6.464 mm, Tahun pembuatan: 2019, MESIN EKSTRUSI LEMBARAN DENGAN KAPASITAS TINGGI, 3 LAPIS (2100 mm) Produsen: FONG KEE INTERNATIONAL MACHINERY CO., LTD. (Taiwan) Model: TSE-90/150/150-2400 Tahun Pembuatan: 2019 Kondisi: Bekas – Kondisi sangat baik, sudah dirakit sepenuhnya, dan disimpan di dalam ruangan. SPESIFIKASI & KINERJA UTAMA: • Lebar Lembaran Jadi: Hingga 2.100 mm (lebar bersih setelah dipotong) • Lebar Celah Cetakan: 2.300 mm • Kapasitas Produksi: Hingga 1.000 kg/jam (tergantung pada jenis resin dan ketebalan lembaran) • Bahan yang Dapat Diproses: PET, PMMA, ABS, PS (HIPS / GPPS), PC, PP • Fleksibilitas Polimer: Dikonfigurasi untuk termoplastik rekayasa dan poliolefin (ekstrusi lembaran PET, PMMA, ABS, PS, PC, PP). SISTEM EKSTRUSI GANDA & PEMBERIAN BAHAN: • Konfigurasi: Ekstrusi Ganda 3 Lapis (A/B/A atau A/B/C) • Ekstruder: - Ekstruder A: Ø 90 mm - Ekstruder B: Ø 150 mm - Ekstruder C: Ø 150 mm • Sistem Pengiriman Lelehan: Pompa Lelehan Gigi MAAG dengan transduser tekanan Dynisco untuk aliran yang sangat stabil • Cetakan Ekstrusi: EDI (Nordson) Ultraflex HRC100-FB (2.300 mm, dibuat di AS) dengan penyesuaian paten Celah Cepat KALENDER & PROSES LANJUTAN: • Tumpukan Pemoles: Kalender horizontal 3 rol dengan rol yang dipoles dengan presisi tinggi • Rol Tambahan Termasuk: Rol Kalender Matte khusus disertakan dalam mesin • Kemampuan Penyelesaian Permukaan: Baik dengan hasil akhir mengkilap/optik berkualitas tinggi maupun hasil akhir anti-silau/matte • Kontrol Suhu: Unit pengaturan suhu multi-zona (TCU) • Perlindungan: Unit aplikasi film pelindung dua sisi sebaris • Pemotongan & Penumpukan: Pemotong silang otomatis berkecepatan tinggi dan unit penumpuk lembaran otomatis • Penggulungan: Unit penggulung tugas berat sebaris SISTEM ELEKTRIK, PENGGERAK & OTOMASI: • Sistem PLC: Siemens SIMATIC (ET 200SP) dengan antarmuka HMI layar sentuh yang intuitif • Inverter Frekuensi: Sistem penggerak Siemens Sinamics G120 • Peralatan Sakelar Listrik Utama: Schneider Electric • Lemari: Enklosur listrik industri dengan sistem pendingin udara independen FASILITAS & UKURAN: • Panjang Total Mesin: Kira-kira 48,0 m • Lebar Total Mesin: Kira-kira 8,7 m • Daya Penggerak Terhubung: Kira-kira 650 kW (988 A) • Gambar Tata Letak: Tata letak CAD teknis lengkap tersedia berdasarkan permintaan. KONDISI SAAT INI & INSPEKSI: • Kondisi: Sudah dirakit sepenuhnya, tidak digunakan, dan disimpan di dalam ruangan dalam lingkungan industri yang terkontrol. Guedozzdnfopfx Aa Hsg • Ketersediaan: Seluruh mesin segera tersedia untuk inspeksi visual profesional di lokasi berdasarkan permintaan. • Alasan Penjualan: Penataan ulang lini fasilitas.

Kondisi: baru, nomor mesin/kendaraan: 691340002, hoku 119-90 – Kompresor piston portabel dengan 2 tingkat kompresi Model serbaguna dengan penggerak sabuk V dan peralatan berkualitas tinggi, dirancang khusus untuk para pengrajin, untuk digunakan di tempat-tempat di mana kualitas udara bertekanan, serta daya tahan dan efisiensi sangat penting, masa pakai yang lama berkat Gujdpfxjvl Ev Ae Aa Heg unit berkinerja tinggi dengan putaran rendah, transportasi yang aman, dan stabilitas yang sangat baik berkat roda besar dengan rem pengunci, pendinginan optimal melalui kipas besar, pendingin tambahan dengan sirip pendingin memastikan suhu rendah pada tangki dan dengan demikian mengurangi kadar kelembapan dalam udara bertekanan, efisiensi yang lebih baik melalui unit yang dioptimalkan, dilengkapi secara standar dengan sakelar tekanan Condor, pengukur tekanan, regulator tekanan dengan pemisah air, dan konektor cepat, motor dengan perlindungan kelebihan beban Spesifikasi teknis: Kapasitas hisap 674 l/menit, kapasitas pengisian 505 l/menit, tekanan maksimum 10 bar, kapasitas tangki 90 l, silinder/tingkat 2/2, putaran 920 putaran/menit, daya motor 4 kW / 400 V Harga pabrik, dari lokasi Seevetal, tidak termasuk biaya transportasi, seperti yang diperiksa, hak untuk menjual kepada pihak lain dicadangkan.

Tahun pembuatan: 1997, Kondisi: bekas, Cocok untuk membakar keramik dan tanah liat, jumlah pembakar: 10+1, bahan bakar: gas alam atau gas cair (LPG), daya: 8kW, panjang: 8800mm, lebar: 2200mm, tinggi: 2300mm, dilengkapi dengan lemari kontrol, panel operasi, dan suku cadang. Peralatan ini hanya digunakan dalam waktu singkat, pemeriksaan di lokasi dapat dilakukan. Gusdpfszybwbox Aa Heg

Kondisi: bekas, ofr002 Gjdpfexr Adyex Aa Houg

Kondisi: bekas, Fungsionalitas: berfungsi sepenuhnya, diameter rol: 50 mm, lebar total: 1.300 mm, tinggi total: 85 mm, panjang total: 2.930 mm, panjang pengangkutan: 2.930 mm, 1000004158 (220864) Manufacturer: Unknown Year of manufacture: Unknown Overall dimensions: approx. 2,930 x 1,300 x 85 mm (L x W x H) Side frame width: 1,300 mm Side frame height: 80 mm Conveying length: 2,930 mm Conveying width: 1,230 mm Roller type: Plastic Rollers per axle: 1 piece, 2 axles per row Roller pitch: 55 mm Roller diameter: 50 mm Drive: Gravity Condition: Used / fully operational Guodpfx Aov Hffgea Heg Function tested: OK

Kondisi: baru, Tahun pembuatan: 2026, masa garansi: 12 bulan, TVM Ø 600 – Customizable High-Performance Crosscut Saws The TVM Ø 600 and TVM Ø 700 are the largest saws produced by CURSAL, featuring vertical reciprocating blade movement—the fastest technology in the industry. If the cutting dimensions meet your needs, this machine is the obvious choice for you. Gsdpsv Iqa Eofx Aa Houg Unique advantages of the TVM Ø 600: Unbeatable value for money: A robust and reliable machine at a competitive price. Simple operation and minimal maintenance: Minimal maintenance requirements and consistently high efficiency over the long term. Increased productivity: The TVM 600 significantly reduces work time and boosts output. Modular design and complete customization: The TVM series features a modular system allowing customer-specific assembly tailored to the exact requirements of each client. Production lines are equipped with turnkey solutions and are immediately ready for use. Versatility in Applications: The TVM Ø 600 is ideal for: Electropneumatic stops for cutting board bundles of repeated dimensions. Numerically controlled stops where high flexibility in dimensions is required. Efficient discharge: Semi-finished products are conveyed via transfer, discharge trays, or roller conveyors, ensuring a continuous and optimized production flow. Key features: Operator safety: Maximum safety for the operator. Improved ergonomics: Optimized production steps. Material wear compensation: Frequent replacements not necessary. Simplified maintenance: Reduced machine downtime. Customizable with CURSAL accessories: For all production requirements. Optimized cost-efficiency: Maximizing the cost-benefit ratio. Main applications: Edging scrap recovery for multi-blade cuts Semi-finished wood furniture products Packaging sector Doors, frames, baseboards, and construction General sawmill applications The TVM Ø 700, an advanced version, is often paired with additional solutions such as: Electropneumatic stops for repeated cuts. Numerically controlled stops for greater dimensional flexibility. Optimized discharge and production flow: As with the Ø 600 model, semi-finished products are conveyed via transfer systems, discharge trays, or roller conveyors. Additional strengths: Enhanced safety and ergonomic design. Low maintenance and long service life. CURSAL accessories for extensive customization. Cost efficiency to optimize return on investment. Applications of the TVM Ø 700: Edging scrap recovery for multi-blade cuts Semi-finished wood furniture products Packaging sector Doors, frames, baseboards, and construction General sawmill applications

Kondisi: baru, Tahun pembuatan: 2026, masa garansi: 12 bulan, TRSI Monoblock-Integrated Pusher – The Benchmark in Europe If you are looking for an innovative, fast, and reliable automatic optimizing crosscut saw, TRSI is the ideal choice. It can be customized to your requirements and is designed for fixed or optimized cutting lengths, making it suitable for a wide range of industrial applications. Ideal for Various Sectors Packaging – Precise cutting of individual boards or packages; also ideal for trimming wood plugs. Windows and Doors – Advanced optimization for quality and defect selection, minimizing reject rates. Furniture – Millimeter-accurate precision for cutting finished and semi-finished products at the highest quality standards. Flooring and Parquet – High-precision cutting for hardwood flooring and parquet applications. Technology That Makes the Difference The TRSI is equipped with advanced programming software that simplifies operation and optimizes production processes: Fixed Length Cutting: Predefined sequences for repeatable, precise operations. Optimized Cutting: Version OL: Length optimization to minimize waste. Version E: Full optimization with defect elimination to maximize yield. Customizable optimization priorities: Choose between market value, waste, quantity, length, or a mixed strategy. Seamless integration with company management systems with no additional interfaces required. Online remote maintenance for continuous technical support. Intuitive HD touchscreen with USB data import. Industrial CNC computer for uninterrupted production. Ultra-Precise and Fast Movement High-speed pusher system on steel guides with recirculating ball bearings and dual carriage for smooth and accurate movement. High-performance brushless motors for superior speed and reliability. Reinforced structure for flawless motion without vibration or slippage. Protected stroke with visible pneumatic lifting function for maximum control at every cutting stage. Powerful and Reliable Cutting Unit Gedpfxev Iqcme Aa Hsug Robust aligner with integrated noise-reducing blower for a more comfortable working environment. Pneumatic pressing system on linear guides with recirculating ball bearings for perfect hold. Multiple rubber-coated wheels with oil-bath clutch for maximum traction and prevention of slippage. Accessories to Maximize Productivity Customizable infeed systems to avoid downtime and enhance efficiency. Manual and automatic printers for clear and precise marking of semi-finished goods. Optimized unloading systems tailored to specific processing requirements. Rely on Cursal for Uncompromising Production Efficiency With the TRSI, your company can achieve unprecedented levels of efficiency and precision. Discover our range of accessories, infeed and outfeed solutions to customize your plant and optimize every step of the cutting process. Contact us today for personalized advice and take your production to the next level.

Tahun pembuatan: 2009, jam operasional: 3.093 h, Kondisi: siap digunakan (bekas), jarak pergerakan sumbu X: 1.000 mm, jarak lintasan sumbu Y: 1.000 mm, jarak gerak sumbu Z: 1.800 mm, produsen pengendali: HEIDENHAIN, model controller: TNC 320, berat keseluruhan: 8.900 kg, lebar total: 3.400 mm, tinggi total: 3.160 mm, panjang produk (maks.): 5.800 mm, kecepatan spindel (maks.): 1.600 rpm, beban meja: 2.500 kg, jumlah sumbu: 5, en Guodpey Hvgtsfx Aa Hog

Kondisi: baik (bekas), Tahun pembuatan: 2009, Gaya penjepit: 90 t Gedpfxszg Ib To Aa Hjug Tipe: Multi-bagian Penggerak: Hidrolik

Kondisi: baik (bekas), Tahun pembuatan: 1987, Rentang honing: 1,9 - 100 mm Kecepatan spindel dapat diatur tanpa tingkat dalam 2 grup: 95 - 3500 rpm Motor penggerak, motor gearbox: 380 V, sekitar 0,55 kW Tinggi kerja: 1000 mm Kebutuhan ruang: 1150 x 800 x 1250 mm Gedpfxezibvie Aa Houg Berat sekitar: 260 kg

Kondisi: hampir baru (bekas), Tahun pembuatan: 2021, OMAG AFFRI WIKI 90 JS-C – Penguji Keras Otomatis Vickers/Knoop | 2021 | Kondisi Sempurna Saya menawarkan untuk dijual penguji keras otomatis profesional OMAG AFFRI WIKI 90 JS-C dari produsen Italia ternama, AFFRI. Perangkat ini diproduksi pada tahun 2021, berfungsi penuh, lengkap, dan siap digunakan. Penguji keras ini dirancang untuk pengukuran ketelitian kekerasan material di laboratorium kontrol kualitas, departemen penelitian dan pengembangan, serta fasilitas produksi. Dilengkapi dengan sistem pengukuran digital dengan kamera dan komputer dengan perangkat lunak khusus yang memungkinkan analisis otomatis dari indentasi. Data Teknis * Produsen: OMAG AFFRI (Italia) * Model: WIKI 90 JS-C * Tahun Produksi: 2021 * Kondisi: sangat baik, berfungsi penuh * Catu Daya: 115–230 V * Berat: sekitar 70 kg * Produksi: Dibuat di Italia Perlengkapan * komputer pengendali dengan perangkat lunak, * sistem pengukuran digital dengan kamera, * meja pengukuran XY, * kabel lengkap, * sakelar darurat, * siap untuk digunakan segera. Guodpfx Aajzkpptj Hjg Aplikasi Perangkat ini sangat cocok untuk pengukuran kekerasan dengan metode: * Vickers (HV), * Knoop (HK), * (tergantung pada konfigurasi, juga metode pengukuran lainnya). Ideal untuk laboratorium, industri otomotif, penerbangan, bengkel perkakas, dan kontrol kualitas.