HELLO THIS IS SHANDONG WINSENSE MACHINERY IF INTERESTING IN HYDRAULIC BREAKERS,EXCAVATORS OR SPARE PARTS ,YOU CAN CALL ME WHATS UP +2120616752516,CALL +86 168 6383 1280,EMAIL : we have all that you need. do not hesitate and just call. sales manager.
Shandong Jinyao Construction Machinery Equipment Co., Ltd is a modern manufacturing enterprise, which dedicate in the independently research and development , produce and sale series of products such as Crushing, Hydraulic Equipment etc. Jinyao has the most sophisticated technology development team, the advanced technological equipment, inspection equipment. As well as the perfect management system, has guaranteed the product performance and the quality.
Professional excavator spare parts manufacture in China
Application OTR-1901 is based on the coulometric sensor method and available for the OTR test of flexible films, sheeting and packages. It can test 3 specimens in one operation with independent results. Features Coulometric sensor method Patent technology Film and package test 3 specimens test simultaneously and independently One-button test, test automatically in whole process Multiple test modes optional Data curves display Computer control Digital flow adjustment 3 Chambers temperature sensor embedded in Environment temperature and humidity sensor inside Chambers water bath technology Unit based on embedded system,24bit Î?-Σ AD Pressure, oxygen and temperature overload protection Traceable reference film calibration Supports DSM system (DSM, lab data management system) Technical indexes Test rangeï¼? Film: 0.01-6500 cm3/m2·d (Standard) 0.07-6,5000 cm3/m2·d (Optional) Resolution: 0.001 cm3/m2·d Package: 0.0001~62 cm3/pkg·d Resolution: 0.00001 cm3/m2·d Specimen amount: 3 specimens, independent Temperature range: 5C â?? 95C Temperature accuracy: ±0.1C Humidity range: 0%RH,35%RH-90%RH,100%RH Humidity accuracy: ±1%RH Test area: 50cm2 Specimen size: Film: size:>=150mm * 94mm Thickness: less 5mm Package: Max size: D120mm * 400mm Carrier gas: 99.999% Nitrogen Carrier flow: 0~20 ml/min Gas interface: 1/8 inch Power supply: AC 220V 50Hz Dimension: 730mm * 590mm * 350mm Net weight: 57kg Standard ASTM D3985, ASTM F2622, ASTM F1307, ASTM F1927, ISO 15105-2, GB/T 19789, JIS K7126-B, YBB 00082003 Configuration Delivery: Main unit, computer, OX-TRANS software, temperature controller, tank regulator, PCIE card, communication cable, sample cutter, vacuum grease. Optional: Package fixtures, reference film, vacuum grease, sample cutter, DSM system. -
We manufacture for almost all major makes and brands of Hydraulic Breaker/ Hammers. Most spare parts for SOOSAN hydraulic breakers and FURUKAWA HB20G,HB30G, including front head, cylinder, back head,piston,chisel,seal kits,diaphragms,rod pin,through bolt,side bolt,bracket etc. We have 1200 types of chisels, 1000 types of seal kits,400types of diaphragms, piston, bush, bolt, pin etc. fit for hydraulic breakers of ALLIED (KRUPP), ARROWHEAD, ATLAS COPCO, BOBCAT, D&A, DAEMO, DNB, FINE, FURUKAWA (KENT), HANWOO (RHINO), HYDRO KAHN, INDECO, KENT (FURUKAWA), KOMAC, KRUPP (ALLIED), MONTABERT (TRAMAC), MSB, NPK, OKADA, RAMMER, RHINO (HANWOO), SEBA, SOOSAN, TOPA, TOYO, TRAMAC (MONTABERT) etc. Excavator auxiliary piping kits for hydraulic breaker,hydraulic crusher etc. Excavator/bulldozer aftermarket parts:track roller, top roller,idler,sprocket,track chain,track shoe etc. Huskie hydraulic hammer/rock breaker: HH150-2,HH300-2,HH500-2,HH750-2,HH1000-2,HH2000-2,HH3600-2,HH4500-2 Inan Makina MTB hydraulic hammer/rock breaker: MTB25,MTB35,MTB36,MTB45,MTB65,MTB85,MTB120,MTB150,MTB155,MTB170,MTB175,MTB210,MTB215,MTB250,MTB255,MTB270,MTB275,MTB285,MTB360,MTB365,GA150,GA200,GA300,GA400 Jacty hydraulic hammer/rock breaker: JB15,NJB215,JB3S,JB6S,JB10,JB10S,JB21,JB27,NJB202,NJB203,NJB206,NJB210,NJB215,NJB221-1,NJB221-2,NJB227,NJB227-2 JCB hydraulic hammer/rock breaker: HM1560Q,HM1760Q,HM2180,HM100,HM160,HM165,HM165Q,HM260,HM265,HM265Q,HM360,HM380,HM385,HM385Q,HM460,HM495,HM495Q,HM550,HM560,HM570,HM670,HM760,HM770,HM850,HM860Q,HM860,HM960,HM1050,HM1150,HM1260Q,HM1350,HM1450,HM1560Q,HM1750,HM2350,HM2460Q,HM2950,HM3060Q,HM3850,HM3950,HM4160 Jisung hydraulic hammer/rock breaker: JSB20,JSB30,JSB40,JSB50,JSB60,JSB81,JSB121,JSB130,JSB151,JSB20G,JSB30G,JSB40G,JSB15G,JSB18G JKHB hydraulic hammer/rock breaker: JKHB71,JKHB101,JKHB301,JKHB401,JKHB1401,JKHB1500,JKHB2000,JKHB71,JKHB801 KCB hydraulic hammer/rock breaker: KCB15,KCB20,KCB25,KCB40,KCB90,KCB170,KCB250,KCB350,KCB15,KCB150,KCB155 Kent hydraulic hammer/rock breaker: KF1,KF2,KF3,KF22,KF35,KF45,KHB20G,KHB30G,KHB40G,KF4,KF5,KF6,KF9,KF12,KF19,KF27,KF70,KHB1G,KHB2G,KHB3G,KHB5G,KHB8G,KHB10G,KHB15G,KHB50G Komac hydraulic hammer/rock breaker: TOR13,TOR18,TOR22,TOR23,TOR26,TOR36,TOR42,TOR55,KB100,KB150,KB200,KB250,KB300,KB350,KB400,KB1000,KB2000,KB2100,KB3500,KB3600,KB4200,KB5000,TOR13,KB1500
We manufacture for almost all major makes and brands of Hydraulic Breaker/ Hammers. Most spare parts for SOOSAN hydraulic breakers and FURUKAWA HB20G,HB30G, including front head, cylinder, back head,piston,chisel,seal kits,diaphragms,rod pin,through bolt,side bolt,bracket etc. We have 1200 types of chisels, 1000 types of seal kits,400types of diaphragms, piston, bush, bolt, pin etc. fit for hydraulic breakers of ALLIED (KRUPP), ARROWHEAD, ATLAS COPCO, BOBCAT, D&A, DAEMO, DNB, FINE, FURUKAWA (KENT), HANWOO (RHINO), HYDRO KAHN, INDECO, KENT (FURUKAWA), KOMAC, KRUPP (ALLIED), MONTABERT (TRAMAC), MSB, NPK, OKADA, RAMMER, RHINO (HANWOO), SEBA, SOOSAN, TOPA, TOYO, TRAMAC (MONTABERT) etc. Excavator auxiliary piping kits for hydraulic breaker,hydraulic crusher etc. Excavator/bulldozer aftermarket parts:track roller, top roller,idler,sprocket,track chain,track shoe etc. Huskie hydraulic hammer/rock breaker: HH150-2,HH300-2,HH500-2,HH750-2,HH1000-2,HH2000-2,HH3600-2,HH4500-2 Inan Makina MTB hydraulic hammer/rock breaker: MTB25,MTB35,MTB36,MTB45,MTB65,MTB85,MTB120,MTB150,MTB155,MTB170,MTB175,MTB210,MTB215,MTB250,MTB255,MTB270,MTB275,MTB285,MTB360,MTB365,GA150,GA200,GA300,GA400 Jacty hydraulic hammer/rock breaker: JB15,NJB215,JB3S,JB6S,JB10,JB10S,JB21,JB27,NJB202,NJB203,NJB206,NJB210,NJB215,NJB221-1,NJB221-2,NJB227,NJB227-2 JCB hydraulic hammer/rock breaker: HM1560Q,HM1760Q,HM2180,HM100,HM160,HM165,HM165Q,HM260,HM265,HM265Q,HM360,HM380,HM385,HM385Q,HM460,HM495,HM495Q,HM550,HM560,HM570,HM670,HM760,HM770,HM850,HM860Q,HM860,HM960,HM1050,HM1150,HM1260Q,HM1350,HM1450,HM1560Q,HM1750,HM2350,HM2460Q,HM2950,HM3060Q,HM3850,HM3950,HM4160 Jisung hydraulic hammer/rock breaker: JSB20,JSB30,JSB40,JSB50,JSB60,JSB81,JSB121,JSB130,JSB151,JSB20G,JSB30G,JSB40G,JSB15G,JSB18G JKHB hydraulic hammer/rock breaker: JKHB71,JKHB101,JKHB301,JKHB401,JKHB1401,JKHB1500,JKHB2000,JKHB71,JKHB801 KCB hydraulic hammer/rock breaker: KCB15,KCB20,KCB25,KCB40,KCB90,KCB170,KCB250,KCB350,KCB15,KCB150,KCB155 Kent hydraulic hammer/rock breaker: KF1,KF2,KF3,KF22,KF35,KF45,KHB20G,KHB30G,KHB40G,KF4,KF5,KF6,KF9,KF12,KF19,KF27,KF70,KHB1G,KHB2G,KHB3G,KHB5G,KHB8G,KHB10G,KHB15G,KHB50G Komac hydraulic hammer/rock breaker: TOR13,TOR18,TOR22,TOR23,TOR26,TOR36,TOR42,TOR55,KB100,KB150,KB200,KB250,KB300,KB350,KB400,KB1000,KB2000,KB2100,KB3500,KB3600,KB4200,KB5000,TOR13,KB1500
contact me: Ella ella A ylfpart . com We ï¼?Xiamen Yonglianfeng Machinery Co., Ltd ï¼?are manufacturer of hydraulic breakers and hydraulic breaker parts for breakers of soosan,npk,furukawa,toyo,toku,krupp etc., the hydraulic hammer spare parts we have are: seal kits ,chisel,rod pin,moil point, piston, diaphragm, charging valve, thrush bush,ring bush,front cover,pedal valve ,front head, back head,cylinder,through bolt, side bolt,stop pin,rod pin etc. We have 18 years experience in producing hydraulic hammer and spare parts ,we can also make and install excavator hydraulic kits/hammer lines/piping kits/hydraulic installation kits/breaker lines for hydraulic hammer,hydraulic shear,hydraulic crusher,quick coupler,demolition grab,power rammer etc. other excavator parts are available too. We have hydraulic breaker seal kits/hydraulic hammer seal kits for the following brand hydraulic breakers. (including o-ring,step seal,buffer ring,gas seal,dust seal,u-packing,back-up-ring): Atals-copco,Allied,Arrowhead,Alicon,Beitite,Chicago,Daemo,D&A,Daenong,DB-tech,Dehaco,Dowin,Drago,EDT,Everdigm,Furukawa,Fine,General,Giant,Gearmore,Hanwoo,Hammeroc,Italdem,Jacty,Jisung,Jkhb,Krupp,Konan,kcb,Kent,Komac,Kumho,Kwanglim,MSB,Montabert,Maverick,Wimmer,Miracle,NPK,Okada,Powerking,Rammer,.Soosan,Sta nley,Toku, Teisaku,T&H,Takeuchi,Teledyne,etc. ALLIED 770CS,775,711,711B,715,725,77,730,735,88,740CS,745,745CS,750,750B,750CS,755,99,770B,770CS,775,780CS,785,795CS,797,805,AR70,AR75,AR75B,AR85,AR95,AR110B,AR120B,AR130,AR130B,AR140B,AR160B,AR160C,AR165,AR170C,AR175 AMPA AMPA250,,AMPA400,AMPA600,,AMPA3000,AMPA5000 ARROWHEAD S10,S20,S30,S40,S50,S60,S100,,S130,,S230,HB2T,HB4T,HB6T,HB10T,HB16T,HB22T ATLAS-COPCO HYBRAULIC BREAKER MB500,MB800,MB1000,MB1200,MB1500,MB1600,MB1700,HB3000,HB3100,TEX100,TEX110,TEX180,TEX250,TEX400,TEX600,TEX900,TEX1400,TEX1800,TEX2000,C70,C80,ES70,ES80,IM100,IM150,IM200,IM300,IM400,PB110,PB160,PB210,PB310,PB420,SBC60,SBC102,SBC115,SBC200,SBC255,SBC410,SBC610,SBC650,SBC800,SBC850,SBU160,SBU220,SBU340,SB50,SB52,SB100,SB100MK2,SB102,SB150,SB150MK2,SB152,SB200,SB202,SB300,SB302,SB450,SB452,SB552,SB702,MB500,MB700,MB750,HB2000,HB2200,HB2500,HB3600,HB4100,HB4200,HBC1100,HBC1700,HBC2500-2,HBC4000,HBC4000-2,HBC6000,EC100T,EC120T,EC135T,EC140T,EC155T,EC40T,EC50T,EC60T,EC70T,EC80T Beilite hydraulic hammer BLT45,BLT53,BLT70,BLT75,BLT85,BLT100,BLT125,BLT135,BLT140,BLT150,BLT155,BLT165,BLT175 Berco BB42, BB52, BB62, BB70, BB80 Bobcat MB2500,MB3500,MB6560
ella (at) ylfpart (dot) com We manufacture for almost all major makes and brands of Hydraulic Breaker/ Hammers. Most spare parts for SOOSAN hydraulic breakers and FURUKAWA HB20G,HB30G, including front head, cylinder, back head,piston,chisel,seal kits,diaphragms,rod pin,through bolt,side bolt,bracket etc. We have 1200 types of chisels, 1000 types of seal kits,400types of diaphragms, piston, bush, bolt, pin etc. fit for hydraulic breakers of ALLIED (KRUPP), ARROWHEAD, ATLAS COPCO, BOBCAT, D&A, DAEMO, DNB, FINE, FURUKAWA (KENT), HANWOO (RHINO), HYDRO KAHN, INDECO, KENT (FURUKAWA), KOMAC, KRUPP (ALLIED), MONTABERT (TRAMAC), MSB, NPK, OKADA, RAMMER, RHINO (HANWOO), SEBA, SOOSAN, TOPA, TOYO, TRAMAC (MONTABERT) etc. Excavator auxiliary piping kits for hydraulic breaker,hydraulic crusher etc. Excavator/bulldozer aftermarket parts:track roller, top roller,idler,sprocket,track chain,track shoe etc. Product Feature 1. have long useful time ,wear resisting and be invariable to be broken. 2. have quite competitive price, but higher quality 3. have beyond challange performance and price comparison 4.Different size available Allied hydraulic hammer/rock breaker: 770CS,775,711,711B,715,725,77,730,735,88,740CS,745,745CS,750,750B,750CS,755,99,770B,770CS,775,780CS,785,795CS,797,805,AR70,AR75,AR75B,AR85,AR95,AR110B,AR120B,AR130,AR130B,AR140B,AR160B,AR160C,AR165,AR170C,AR175 Ampa hydraulic hammer/rock breaker: AMPA250,,AMPA400,AMPA600,,AMPA3000,AMPA5000 Arrowhead hydraulic hammer/rock breaker: S10,S20,S30,S40,S50,S60,S100,,S130,,S230,HB2T,HB4T,HB6T,HB10T,HB16T,HB22T Atlas Copco hydraulic hammer/rock breaker: MB500,MB800,MB1000,MB1200,MB1500,MB1600,MB1700,HB3000,HB3100,TEX100,TEX110,TEX180,TEX250,TEX400,TEX600,TEX900,TEX1400,TEX1800,TEX2000,C70,C80,ES70,ES80,IM100,IM150,IM200,IM300,IM400,PB110,PB160,PB210,PB310,PB420,SBC60,SBC102,SBC115,SBC200,SBC255,SBC410,SBC610,SBC650,SBC800,SBC850,SBU160,SBU220,SBU340,SB50,SB52,SB100,SB100MK2,SB102,SB150,SB150MK2,SB152,SB200,SB202,SB300,SB302,SB450,SB452,SB552,SB702,MB500,MB700,MB750,HB2000,HB2200,HB2500,HB3600,HB4100,HB4200,HBC1100,HBC1700,HBC2500-2,HBC4000,HBC4000-2,HBC6000,EC100T,EC120T,EC135T,EC140T,EC155T,EC40T,EC50T,EC60T,EC70T,EC80T Beilite hydraulic hammer/rock breaker: BLT45,BLT53,BLT70,BLT75,BLT85,BLT100,BLT125,BLT135,BLT140,BLT150,BLT155,BLT165,BLT175 Berco hydraulic hammer/rock breaker: BB42, BB52, BB62, BB70, BB80 Bobcat hydraulic hammer/rock breaker: MB2500,MB3500,MB6560 Case hydraulic hammer/rock breaker: CB140, CB200, CB370, CB620, CB735, CB1150, CB1450, CB2850, CB3750, CB4000, CB5200, CB 6000
How to offer? What is the information we require for customer before we make the quotation for Tractor Loader Scoop Excavator Hydraulic Cylinder? 1. Bore & Rod Dia. ( inch or mm) 2. The closed & opened length (Stroke) 3. Mounted Type: like bearing or clevis 4. Working & Testing Pressure 5. The oil port size, thread size 6. Assembling way & distance 7. Drawing or blueprint is enough for quotation What's hydraulic cylinder? A hydraulic cylinder is a mechanical actuator used to provide unidirectional force through a unidirectional stroke. Hydraulic cylinders are used in almost every industry and are available in a variety of confiurations. The two main types of hydraulic cylinders are Tie-rod and Welded. Each of these cylinder types can have unique applications due to their design s. Tie-rod cylinders are usually installed in light to medium duty applications and are generally designed to be repaired or re-packed if necessary. Welded cylinders are designed for most applications and are more complex in design, but are generally more diffiult to repair due to the welded design. Welded cylinders are typically a better solution due to their compact design and when a more robust design is important in an application. What's MOUNTING OPTIONS? The most commonly used mounting options are flange, trunnion, clevis, pin-eye, cross-tube,spherical, and tang. Cylinder mounting is chosen based upon the applications requirements. Why choose us? 1: Various style for completely series hydrauli products for you to choose 2: High quality with competitive price 3: Provide free products information. 4: Reliable quality assurance and active after-sell service 5. 100% test before shipment 6. Short lead time 7. Supply custom made cylinders for our customers Quality assurance Use high-end components The best design which is designed by experienced engineers Well-trained workforce All hydraulic cylinders must do pressure test before shipment Good quality control and assurance system Advanced test apparatus High pricision measuring apparatus Zhejiang Handa Machinery CO.,Ltd Company profile: Professional: 19 years' experience focused on hydraulic Cylinders Brand: HANLDA, China Famous Brand Engineers: 13 professional and experienced engineers Certificates: ISO9001:2008 / CE For all the products Letters patents:17official patents Honors:Lishui Hi-tech Enterprise,Lishui famous brand Exported Countries: North America, South Asia, Southern Europe, Northern Europe,Central America, Western Europe, Eastern Asia, Mid East, Oceania, Africa, Southeast Asia,Eastern Europe, South America, Ukraine.
WAW Series Computer Controlled Electro-hydraulic Servo Universal Testing Machine They are suitable to test various metallic & non-metallic materials for tension, compression, flexure, bending and shearing strength. It is simple, easy to operate and widely used in works, laboratories and high schools for material properties R&D and quality control. Equipped with computer as well as printer, it can display, record, process and print the test results and can draw test curves automatically in real time.
Impact Testing System They are accordance with International Standard ISO148-1983 & ASTM E23. & mainly used to determine the anti-impact capability of metal materials under dynamic load.They are the best testing equipment for many metal material manufactories, quality inspection departments and universities. The result will display on both digital screen and dial gauge. JBW Series can Carry out the functions of clear zero and return automatically, capture the value of lost impact energy and pendulum cycle by means of setting up with computer program, and the result can be displayed, stored and printed out. Nist calibration certification
Product Description: 1) Selected raw materials, design and produce all components ourselves,25 years of experiences in heat treatment,. 2)Introduce advanced technology and import high-tech producing equipment from South Korea 3)Professional R&D team, meet diversified technical requirements of customers 4)Reasonable price and prompt shipment assured. Application: mining mining, second-time breaking metallurgy clearing slag, demolition of furnace and foundation road repairing, breaking, foundation work railway tunneling, demolition of bridge construction demolition of bulinding and reinforced concrete ship repairing clearing clam and rust from the hull others breaking frozen mud Suitable Excavator: MAXROKER hydraulics breakers suit many excavator brands like :DOOSAN DAEWOO, HYUNDAL, KOMATSU, HITACHI, CAT,KOBELCO, VOLVO, LIEBHEER, SUMTOMO, KATO, JONYANG, ATLAS ect. Our Services: 1.7*24 hours on-line consulting support by email and whatsapp: +8615165787156. 2.Customer-oriented sales,supply professional technical service. 3.Warranty:13 months for main body and valve,2 months for seal kits. 4.OEM/ODM available. The Standard Free Spare Parts: two pcs of Chisel, two pcs of oil tube, one pc of Nitrogen Cylinder, a set of repair tools with tool box, a Nitrogen pressure gauge,one set of seal kits and operation manual as well. FAQ Q 1:Are you a trading company or manufacturer ? Manufacturer with factory. Q 2:Do you accept OEM service ? Yes. Q3:How about the package ? Normally ,plastic bag inside and carton onside .we will do according to customers' requirements. Q4 : Did you have export experience about products? Yes,a professional sales team is promoting our hydraulic breakers to 50 countries more in the world. Q5 : What have about suitable excavators ? Applicable excavators are from 0.8ton to 55ton. Our breakers can be applied for all kinds of excavator.
Bltb-45 hydraulic breaker specification: Weight 189 kg Length 1265 mm Required oil flow 20-40 l/min Working pressure 90-120 kg/cm2 Impact rate 700-1200 b.P.M Hose diameter 1/2 in Chisel diameter 45 mm Chisel length 450mm Applicable excavator 0.8-1.5 ton
BLTB-53 Hydraulic Hammer Specification: Weight: 141 kg Length: 1400 mm Required Oil Flow: 20-50 L/min Working Pressure: 90-120 Kg/cm2 Impact Rate: 600-1100 b.p.m Hose Diameter: 1/2 In Chisel Diameter: 53 mm Chisel Length: 530mm Applicable Excavator: 2.5-4.5 ton
BLTB-53 Hydraulic Hammer Specification: Weight: 141 kg Length: 1400 mm Required Oil Flow: 20-50 L/min Working Pressure: 90-120 Kg/cm2 Impact Rate: 600-1100 b.p.m Hose Diameter: 1/2 In Chisel Diameter: 53 mm Chisel Length: 530mm Applicable Excavator: 2.5-4.5 ton
1.Alloy steel material, super heat treatment technology 2.Certificated by ce, iso, tuv 3.Super striking force 4.More convenience to handle the breaking object
Lbs hydraulic breaker Strong breaking ability, Simple&low cost maintenance, Compatible for carrier of various type Ce, iso Lbs hydraulic breaker features 1. Improve reliablility and burability 2. Enhanced impact energy with stronger breaking ability 3. Simple and low cost maintenance 4. Meet diversified technical requirement of customer 5. Newly-design casing, better appearance 6. Compatible for carriers of various types Manufacturer advantages: 1.Forward-looking self-research for most spare parts. 2.Have the most advanced production and inspection equipment, short delivery time 3.Strict procedure quality supervising, test each product before shipment 4.Complete quality control system, iso9001:2008 and environmental management system, iso14001:2004. 5.Product meet european standards, with ce certificate. Each machine with 2 pcs of chisels, 2pcs of hydraulic hoses, 1 pc of n2 gas bottle, 1 pc of working box, 1 pc of gas charging kit, 1 pc of operating manual book and 1 pc of spare part book. Standards export packing/plywood packing
Hiw series industrial-grade hydraulic iron worker featuring multiple functions, including: round hole punching, square hole punching, oblong hole punching, steel plate punching, flat bar punching, angle steel punching, c-channel punching, h-beam punching, i-beam punching, steel plate bending, angle steel notching and bending, angle steel shearing/cutting, flat shearing/cutting, round/square bar shearing/cutting, c-channel shearing/cutting, i-beam shearing/cutting, t-bar shearing/cutting, press brake, angle bending and pipe notching! it comes standard with: quick-change coupling nut & sleeve, squaring arm with scale, electronic back gauge, gauging table with stops, punching base table, safety guards and more.
1.High equilibrium reflux boiling point 2.Competitive price 3.Fast delivery 4.Oem 5.Professional tech
