Beli Engel Victory 750 H/ 330L/260 Combi - 2010 bekas (61.914)

Kondisi: sangat baik (bekas), Tahun pembuatan: 2010, jam operasional: 20.656 h, Fungsionalitas: berfungsi sepenuhnya, nomor mesin/kendaraan: 174620, gaya penjepit: 260 kN, Mesin ini berasal dari pembuatan alat dan hanya digunakan untuk pengambilan sampel. Oleh karena itu, jam operasinya rendah dan kondisinya sangat baik. Silakan lihat dokumen, konfirmasi pesanan ada di sana. Lredpfx Aoxfgfzsa Usl

Kondisi: sangat baik (bekas), Tahun pembuatan: 2010, 1 Lsdpfoy Eytzox Aa Ujrl

Kondisi: sangat baik (bekas), Tahun pembuatan: 2011, Engel Victory 1350/260 Tech Ecodrive with Engel Viper 20 Robot / Hybrid Machine Year of manufacture: 2011 Injection unit: Screw diameter: 55 mm Shot weight: approx. 590 g Injection pressure: 2183 bar Dosage volume: 618 ccm Clamping unit: Clamping force: 260 t Tie bar distance: 0x0 mm Platen size: 1100x1000 mm Ejector: hydraulic Clamping unit: hydraulic Control system: CC 200 - touchscreen Additional equipment: Production line with Engel Viper 20 robot Machine in very good technical condition Tie-bar-less, hybrid machine: energy-saving and very quiet 8x air valve on fixed platen side 2x hydraulic core pull on fixed platen side 2x hydraulic core pull on moving platen side 18x hot runner control circuits Injection unit is wear-resistant and corrosion-resistant Main motor – servo motor with inverter drive – for energy savings Proportional valve on injection unit – precise injection Engel Viper 20 Robot Year of manufacture: 2011 6-axis robot: 4 axes (X, Y, Z, B [rotation]) driven by servo motors (electric), axes A and C – pneumatic Robot safety package Robot with adapter, conveyor belt, and Engel branded safety housing Purchase of robot and conveyor belt available at extra cost Dimensions: Weight: 19,400 kg L x W x H: 7.06 x 2.03 x 2.30 m All offered machines are started up by our service technicians before sale. It is possible to receive a video of the technical test of the selected machine or to participate in live technical tests at our facility in Łódź. Ljdpfx Aoy Sl Iqoa Uerl Price: Upon request

Kondisi: sangat baik (bekas), Tahun pembuatan: 2021, Engel Victory 2460/260 Tech Ecodrive with Engel Viper 20 Robot / Hybrid Machine / Operating hours: approx. 10,000 h in automatic mode Year of manufacture: 2021 Injection Unit: Screw diameter: 70 mm Shot weight: approx. 1100 g Injection pressure: 2000 bar Dosage volume: 1212 cc Clamping Unit: Clamping force: 260 t Tie bar spacing: 0x0 mm Platen size: 1100x1000 mm Ejector: hydraulic Clamping unit: hydraulic Control system: CC 300 - touch screen Additional equipment: Production line with Engel Viper 20 robot Machine in perfect technical condition Tie-bar-less, hybrid machine: energy-saving and very quiet Operating hours: approx. 10,000 in automatic mode Air valve x 5 Hydraulic core pull x 2 (on the moving platen side) Hydraulic core pull x 2 (on the fixed platen side) Injection unit: wear-resistant and corrosion-resistant Main motor of the machine: servo motor driven by inverter - energy saving Proportional valve on the injection unit – precise injection Kistler sensor - mold pressure control Engel Viper 20 Robot Year of manufacture: 2021 6-axis robot: 6 axes powered by servo motors (electric): X, Y, Z, B, C Touch control panel Robot safety package Robot with adapter, conveyor belt and safety enclosure Purchase of robot and conveyor belt at extra cost Dimensions: Weight: 21,000 kg Length/width/height: 7.35x2.06x2.37 m All machines offered are started up by our service technicians prior to sale. It is possible to receive a video of the technical tests of the selected machine or to participate in live technical tests at our company in Łódź. Lredpfjy Sl Ikox Aa Uel Price: On request

Kondisi: sangat baik (bekas), Tahun pembuatan: 2015, Engel Victory 200H/60W/180 Combi / Production Line with Engel Viper 20 Robot Year of Manufacture: 2015 Injection Unit: - Screw diameter: 22 mm - Shot weight: approx. 54 g - Injection pressure: 2,392 bar - Dosage volume: 61 cc Clamping Unit: - Clamping force: 180 t - Tie bar distance: 0 x 0 mm - Platen size: 1,020 x 980 mm - Ejector: hydraulic - Clamping unit: toggle lever Control system: CC 300 touchscreen Additional equipment: - 2-component machine with original Engel Viper 20 robot - Tie-bar-less machine, hybrid: energy-efficient, high-speed, and very quiet - Operating hours: approx. 20,000 h in automatic mode - Euromap 67 - Robot interface - 4x air valve - 6x hydraulic core pullers - Hot runner control with 36 zones - Reinforced injection units - bimetallic - Second injection unit mounted at an angle, screw diameter fi 15 mm (18 cc/2,203 bar) - Main drives: 2x servo motors controlled by inverters - Proportional valves on injection units - precision injection - Kistler sensor for mold pressure regulation - Parallel movements - The machine is equipped with an additional servo motor for mold drive - Inputs/outputs for peripheral devices Engel Viper 20 Robot Year of Manufacture: 2015 - High-speed robot, 5 axes: X, Y, Z, A, C axes driven by electric servo motors - Robot is integrated with the machine and has an additional control panel - Robot safety package - Robot with adapter and protective housing Dimensions: - Weight: 13,200 kg Ljdpfxoy Sl H Ts Aa Uorl - Length/Width/Height: 5.86 x 1.98 x 2.51 m All offered machines are started up by our service technicians before sale. A video of the technical tests of the selected machine can be provided, or you can participate in technical live tests at our company in Łódź. Price: On request

Kondisi: sangat baik (bekas), Tahun pembuatan: 2013, Engel Victory 330H/80V/160 Combi Ecodrive / Production Line with Sepro SR S5-25 S3 Trans Robot / Operating Hours: approx. 18,000 h in automatic mode Year of manufacture: 2013 Lrodoy Sl Hmepfx Aa Usl Injection unit: Screw diameter: 30 mm Shot weight: approx. 100 g Injection pressure: 2,385 bar Metering volume: 113 cc Clamping unit: Clamping force: 160 t Tie bar spacing: 0x0 mm Platen size: 750x750 mm Ejector: hydraulic Clamping unit: hydraulic Control: CC 200 - touchscreen Additional equipment: 2K injection moulding machine with rotary table and robot Tie-bar-less machine, hybrid: energy-saving, high-speed and very quiet Very good technical condition Operating hours: approx. 18,000 h in automatic mode Total operating hours: 24,312 h Euromap 67 Robot interface Pneumatic valve x 5 Hydraulic core pull x 5 Control with hot runner control x 16 Reinforced injection unit – bimetallic Main drives – 2 x servo motors controlled by inverter Proportional valves on injection units – precise injection Screw diameter (vertical injection unit): ⌀22 mm – approx. 28 g/PS Option to purchase a rotary table Sepro SR S5-25 S3 Trans Robot Year of manufacture: 2013 3-axis robot: all axes (X, Y, Z telescopic) electrically driven by servo motors Travel distances per axis (approx.): X-2000, Y-1000, Z-1500 Automatic axis lubrication Touchscreen control panel Robot safety package Robot with adapter and protective housing Purchase of the robot for an additional charge Dimensions: Weight: 8,700 kg Length/Width/Height: 5.35x1.76x3.42 m All machines offered are started up by our service technicians prior to sale. It is possible to receive a video of the technical tests of the selected machine or to participate in live technical demonstrations at our premises in Łódź. Price: On request

Kondisi: sangat baik (bekas), Tahun pembuatan: 2017, Engel Victory 330H/200V/140 Combi Ecodrive / Production Line with Sepro Multi Inject 20 Robot / Operating Hours: approx. 18,000 h in automatic mode Year of manufacture: 2017 Injection Unit: Screw diameter: 30 mm Shot weight: approx. 100 g Injection pressure: 2,400 bar Dosage volume: 113 ccm Clamping Unit: Clamping force: 140 t Tie bar distance: 0 x 0 mm Platen size: 750 x 750 mm Ejector: hydraulic Clamping unit: hydraulic Control system: CC 300 – Touchscreen Additional Equipment: 2K injection molding machine with rotary table and robot Tie-bar-less machine, hybrid: energy efficient, high-speed, and very quiet Very good technical condition Operating hours: approx. 18,000 in automatic mode Total operating hours: 25,369 h Euromap 67 Robot interface Air valve x 8 Hydraulic core pull x 5 Hot runner control x 16 Reinforced injection units – bimetallic Main drives: 2 x servo motors controlled by inverter Proportional valves on the injection units – precise injection Parallel movements Ljdsy Sl E Ajpfx Aa Uorl Integrated tool pressure control system by Sensor Kistler – measures mold pressure Screw diameter on the vertical injection unit: ⌀25 mm – approx. 58 g/PS Option to purchase the original Foboha rotary table for an additional charge Rotary table diameter: 740 mm Robot Sepro Multi Inject 20 Year of manufacture: 2017 3-axis robot: all axes driven by electric servo motors: X, Y, Z (telescopic) Travel path (approx.): X-4000, Y-1200, Z-1500 Automatic axis lubrication Touch control panel Robot safety package Robot with adapter and safety enclosure Robot purchase available for an additional charge Dimensions: Weight: 10,300 kg Length/Width/Height: 5.56 x 1.76 x 3.46 m All offered machines are started up by our service technicians prior to sale. It is possible to obtain a video of the technical tests of the selected machine or to participate in live technical tests at our company site in Łódź. Price: on request

Kondisi: hampir baru (bekas), Tahun pembuatan: 2015, gaya penjepit: 1.200 kN, 1 Ledoxyi Rvopfx Aa Ujrl

Kondisi: baik (bekas), Tahun pembuatan: 2004, Ref. No.: 18255 Manufacturer: ENGEL Model: Victory 750 / 180 tech Year of manufacture: 2004 Clamping Unit Clamping force: 180 tons Opening stroke: 750 mm Tie bar spacing (h x v): 960 x 830 mm Minimum mould height: 500 mm Max. daylight: 1250 mm Injection Unit Screw diameter: 45 mm Injection volume: 318 cm³ Shot weight PS: 302 g Injection pressure: 1769/2360 bar Dimensions and Weights Machine weight: 13,500 kg Robot Brand: Wittmann Model: W743 Year of manufacture: 2009 Additional Information: ENGEL Victory 750/180 Tech – Performance, Flexibility and Reliability with Tie-Bar-Less Technology The ENGEL Victory series is designed specifically for technical plastics processing and is one of the professional injection moulding machines featuring high energy efficiency and maximum mould flexibility. Unlike conventional machines with tie bars, this series offers a significantly more flexible working area thanks to its tie-bar-less clamping system (Tie-Bar-Less Technology). ⸻ 🔍 Benefits of the ENGEL Victory Series ✔ Tie-Bar-Less Design (Tie-Bar-Less Technology) Lsdswm Iz Njpfx Aa Ujrl The greatest advantage of the globally renowned ENGEL Victory series is its tie-bar-less construction. This results in the following benefits: • Easy accommodation of larger moulds • Improved accessibility for complex mould geometries • Shorter mould changeover times • Simplified robot integration • More efficient utilisation of production floor space This system offers significant advantages particularly in automotive, technical moulded parts, packaging, and industrial applications. ⸻ ✔ Wittmann Robot Integration The machine has been operated in conjunction with a Wittmann robot. Robot specifications: • Wittmann W743-0424 • Year of manufacture: 2009 • Payload: 25 kg • X-axis: 1200 mm • Y-axis: 1600 mm • Z-axis: 4000 mm This equipment provides significant benefits for automated production processes. ⸻ 🔍 Machine Operation The ENGEL Victory Tech series operates using a servo-hydraulic principle. ✔ Hydraulic System: • Clamping unit • Injection movements • Ejector system • Mould movements are all powered by a high-performance hydraulic system. ✔ Thanks to the servo-regulated hydraulics: • Only the actual energy required is consumed • Power consumption is significantly reduced • Quieter operation is achieved • Stable production is ensured Unlike older hydraulic systems, the machine does not run permanently at full load. The servo pump system only operates when needed, which results in the following advantages: • Lower energy costs • Reduced heat generation • Extended component lifespan • More stable process conditions

Kondisi: sangat baik (bekas), Tahun pembuatan: 2004, jam operasional: 98.108 h, gaya penjepit: 1.500 kN, diameter sekrup: 50 mm, berat injeksi: 354 g, Engel Victory 750/150 Tech mesin cetak injeksi (146) Nomor: 146 Ketersediaan: siap di stok Tahun produksi: 2004 Produsen: Engel Kondisi mesin cetak injeksi: bekas Diameter sekrup [mm]: 50 Berat injeksi [g]: 354 Tekanan injeksi [bar]: 1427, 2500 Gaya penutup [kN]: 1500 Jarak antar kolom [mm]: tanpa kolom Ukuran pelat [mm]: 750 x 850 Jenis kontrol: CC 200 Bahasa: Jerman Daya terpasang [kW]: 61 Jam operasional [h]: 98108 Berat [kg]: 9500 Dimensi [mm]: 5700 x 2000 Corong pengisian: TIDAK Ledpfey Ec D Nox Aa Uorl Rantai penanda inti: Ya Koneksi robot: Ya

Kondisi: baik (bekas), Tahun pembuatan: 2009, Spannkraft: 90 t Schraubendurchmesser: 30 mm Lredpfx Aey Duaaea Usl Typ: Mehrteilig Antrieb: Hydraulisch

Kondisi: siap digunakan (bekas), Tahun pembuatan: 2004, Fungsionalitas: berfungsi sepenuhnya, gaya penjepit: 2.157 kN, Tanpa harga minimum – penjualan dijamin kepada penawar tertinggi! DETAIL TEKNIS Gaya penutupan: 220 t Diameter sekrup: 55 mm + 40 mm Volume injeksi maksimum: 618 cm³ + 251 cm³ DETAIL MESIN Pelat penjepit: 960 x 830 mm Lsdpfx Aoy Exdxsa Ujrl Tinggi pemasangan cetakan minimum: 320 mm Tinggi pemasangan cetakan maksimum: 730 mm PERLENGKAPAN EC100/A03 Catatan: Jika Anda membeli beberapa item dari lokasi yang sama (lihat penawaran di bawah), Anda akan mendapatkan biaya pembongkaran dan pemuatan yang lebih murah.

Kondisi: sangat baik (bekas), Tahun pembuatan: 2016, schliesskraft-arbeitsstunden-mehrkomponenten-antrieb-hydraulisch Ledsyyzzvspfx Aa Uorl

Kondisi: hampir baru (bekas), Tahun pembuatan: 2011, jam operasional: 48.000 h, Fungsionalitas: berfungsi sepenuhnya, gaya penjepit: 3.000 kN, diameter sekrup: 45 mm, es-en-001 Lsdpfx Aajw Hwpps Ujrl

Kondisi: diremaj di bengkel (bekas), Tahun pembuatan: 2004, Engel "bimaterial" injection molding machine (horizontal and vertical) with 80-ton clamping force for INDEX molds. Year 2004, approximately 58,000 operating hours. The machine is delivered refurbished. Please inquire about our commissioning service, which includes a functional warranty. Lrjdpjp At Udefx Aa Usl Technical Details CLAMPING FORCE: 800 kN YEAR OF MANUFACTURE: 2004 OPERATING HOURS: 58,332 SCREW DIAMETER: 18 mm (horizontal) SCREW DIAMETER: 30 mm (vertical) OPENING STROKE: 457 mm INJECTION PRESSURE: 2,207 BAR (horizontal) INJECTION PRESSURE: 1,451 BAR (vertical) INJECTION VOLUME: 26 cm³ (horizontal) INJECTION VOLUME: 99 cm³ (vertical)

Kondisi: siap digunakan (bekas), Tahun pembuatan: 2012, jam operasional: 73.164 h, Data Umum Berat mesin: 19.400 kg Tinggi alat: 2.300 mm Dimensi Panjang mesin: 5.861 mm Unit Injeksi Diameter ulir: 60 mm Unit Penjepitan Ljdex Nr Rtspfx Aa Ujrl Gaya jepit: 2.600 kN Engel VICTORY 1350/260 tech ini diproduksi pada tahun 2012. Memiliki gaya penjepitan 260 ton, volume injeksi maksimum 735 cm³, dan diameter ulir 60 mm. Dimensi mesin: 5.861 × 1.923 × 2.300 mm, berat 19.400 kg. Saat ini masih beroperasi dalam kondisi sangat baik dengan 73.164 jam kerja. Hubungi kami untuk informasi lebih lanjut tentang mesin ini. Jenis Aplikasi Injection Moulding

Kondisi: hampir baru (bekas), Tahun pembuatan: 2023, Fungsionalitas: berfungsi sepenuhnya, nomor mesin/kendaraan: 258676, gaya penjepit: 3.800 kN, diameter sekrup: 450 mm, tekanan injeksi: 2.400 batang, Die E-VICTORY 765H/170W/400 COMBI ist eine Hochleistungs-Spritzgießmaschine, die für Präzision und Effizienz in industriellen Anwendungen konzipiert wurde. Diese vielseitige Maschine ist mit zwei Plastifiziereinheiten ausgestattet und bietet Schneckendurchmesser von 22 mm bis 55 mm sowie eine maximale Einspritzkapazität von bis zu 475 cm³. Die Maschine arbeitet mit einer Schneckendrehzahl von bis zu 400 U/min und einem Drehmoment von 900 Nm, was eine schnelle und gleichmäßige Materialverarbeitung gewährleistet. Das E-VICTORY-Modell ist für die Verarbeitung verschiedenster Materialien wie GPPS, HDPE und PP geeignet, wobei spezifische Rückgewinnungsraten für jedes Material berücksichtigt werden. Die Schließeinheit der E-VICTORY 765H/170W/400 COMBI bietet eine robuste Schließkraft von 4.000 kN, einen maximalen Plattenabstand von 1.500 mm und eine minimale Werkzeughöhe von 500 mm. Die großzügige Aufspannplatte mit einer Größe von 1.300 mm x 1.100 mm ermöglicht die Aufnahme großer Werkzeuge mit einem maximalen Werkzeuggewicht von 6.000 kg. Die Spritzeinheit verfügt über einen Düsenhub von 400 mm und 67 kN, was eine präzise Einspritzkontrolle sicherstellt. Die Trockenlaufzeit der Maschine ist mit 3 Sekunden optimiert und trägt somit zur Steigerung der Produktionseffizienz bei. Die E-VICTORY 765H/170W/400 COMBI ist aus hochwertigen Materialien gefertigt und überzeugt durch fortschrittliche Konstruktion – sie ist auf Langlebigkeit und Zuverlässigkeit ausgelegt. Die Maschine verfügt über sechs bis sieben Heizzonen mit einer Gesamtleistung von 185 kW sowie eine Kühlleistung von 7,40 kW, was ein optimales Thermomanagement garantiert. Die Maschine erfüllt die geltenden Branchenstandards und bietet eine umfassende Lösung für Hersteller, die hohe Präzision und Produktivität in der Spritzgießfertigung suchen. Dank ihrer fortschrittlichen Ausstattungsmerkmale und technischen Vorteile eignet sich diese Maschine ideal für Anwendungen in der Automobilindustrie, der Konsumgüterproduktion sowie der Medizintechnik. Ledpsx E T Ulsfx Aa Uerl

Kondisi: bekas, Tahun pembuatan: 2018, 1 Lrodpfx Aajy I R Ino Ujl

Kondisi: siap digunakan (bekas), Tahun pembuatan: 2019, jam operasional: 14.674 h, diameter sekrup: 45 mm, produsen pengendali: ENGEL, model controller: CC300 microcomputer, This Engel Duo 740 H / 740 M / 500 WPX combi M injection moulding machine was manufactured in 2019. It features a compact two-platen design, a minimal footprint, and intelligent servo hydraulics for reduced energy consumption. The machine is equipped with a CC300 microcomputer control system, including a 21.5-inch full HD touchscreen, and an advanced material package suitable for thermoplastics up to 350°C. For further information about this injection moulding machine, please contact us. Additional Equipment • Mould heating: 32 control circuits, max. heating capacity 60 kW • Vacuum compressed air circuits: with venturi nozzle and pressure switch • Air solenoid valves: 2/2-way, R1/2 inch • Autoprotect injection monitoring: self-learning system for mould protection • Advanced material package: for thermoplastics up to 350°C, max. reinforcement level 30% Machine Advantages Qualitative Machine Benefits • High-precision and sensitive mould protection • Advanced control system with 21.5" full HD touchscreen and user authorization system Technical Machine Benefits • Clamping plate stroke: 1800 mm • Max. distance between clamping plates: 2650 mm • Mould installation height: min. 850 mm, max. 1740 mm • High operational safety due to robust platen guidance and precise platen parallelism • Energy efficient with reduced power consumption and intelligent servo-hydraulics (Engel ecodrive) Lrsdpfx Aox Nr Tnoa Ujl • Multi-circuit hydraulics for simultaneous movements (ejector, core pull, nozzle) Additional Information Machine still under power

Kondisi: baik (bekas), Tahun pembuatan: 2010, gaya penjepit: 500 kN, Engel victory 200/50 spex (2010) Lsdpowv Ukijfx Aa Uerl CC200 Clamping force: 50 t Screw diameter: 35 mm Type: Horizontal Drive: Hydraulic Operating hours: 56,000

Kondisi: sangat baik (bekas), Tahun pembuatan: 2016, gaya penjepit: 4.500 kN, 001 Ledpfoy Ufd Rsx Aa Uerl

Kondisi: sangat baik (bekas), Tahun pembuatan: 2011, Engel Victory 500/80 Tech / Production Line with Engel Viper 12 Robot Year of Manufacture: 2011 Injection Unit: Screw Diameter: 45 mm Shot Weight: approx. 295 g Injection Pressure: 1,598 bar Dosage Volume: 318 cc Lsdey Sml Ropfx Aa Uorl Clamping Unit: Clamping Force: 80 t Tie Bar Distance: 0x0 mm Platen Size: 670x600 mm Ejector: hydraulic Clamping Unit: hydraulic Control System: CC 200 - Touchscreen Additional Equipment: Tie-barless machine Euromap 67 Robot Interface Hydraulic Core Pull x 3 Injection Unit hardened - Bimetallic Robot Engel Viper 12 Year: 2014 5-axis robot: 4 axes driven by servo motors (electric); axis A - pneumatic Touch control panel Robot with adapter and protective housing with part separator Purchase of the robot at extra cost Dimensions: Weight: 5,300 kg Length/Width/Height: 4.57x1.48x2.38 m Drive: Pumps/Motor: 15 kW All machines offered are started up by our service technicians before sale. It is possible to receive a video of the technical tests of the selected machine or to participate in live technical tests at our company in Łódź. Price: On request

Kondisi: sangat baik (bekas), Tahun pembuatan: 2004, En: Engel Victory 330/110 Tech / Production line with Engel ER-HLI 41 robot and conveyor belt / Machine in very good technical condition Year of manufacture: 2004 Injection Unit: Screw diameter: 40 mm Shot weight: 190 g Injection pressure: 1670 bar Dosage volume: 201 ccm Clamping Unit: Clamping force: 110 t Tie-bar spacing: 0x0 mm Platen size: 790x680 mm Ejector: hydraulic Clamping unit: hydraulic Control: CC 100 Additional equipment: Production line with integrated Engel ER-HLI 41 robot and conveyor belt Tie-bar-less machine Ledey Sl Epjpfx Aa Usrl Hydraulic core pull x 1 Injection unit hardened – bimetallic Machine serviced by authorized Engel service Machine with original protective enclosure for robot and conveyor belt Dimensions: Weight: 7,400 kg Length/Width/Height: 5.10x1.50x2.10 m Drive: Pump/motor: 18.5 kW Heating capacity: 9.2 kW Total power: 27.7 kW All offered machines are started up by our service technicians before sale. It is possible to obtain a video of the technical test for the selected machine or to participate in live technical tests at our facility in Łódź. Price: On request

Kondisi: sangat baik (bekas), Tahun pembuatan: 2012, gaya penjepit: 160 kN, Clamping force: 160 t Screw diameter: 45 mm Type: Horizontal Lrodpfx Aaex Up T Nj Uel Drive: Hydraulic

Kondisi: baik (bekas), Tahun pembuatan: 2009, gaya penjepit: 1.500 kN, Perlengkapan: dokumentasi / manual, Steuerung CC200 Spannkraft: 150 t Ledpfx Aaey Rn E Aj Uorl Schraubendurchmesser: 50 mm Schussvolumen: 422 cm³ Typ: Horizontal Antrieb: Hydraulisch