CHOHO (Qingdao Choho Industrial) engine, industrial, marine, agricultural & motorcycle chain systems

Supply the complete range of chain transmission systems manufactured by Qingdao Choho Industrial Co., Ltd. (CHOHO, 10 production bases in China and Thailand): IATF 16949 automotive timing chain kits, ISO/ANSI industrial roller, leaf, cement elevator and MAN-certified marine diesel chains, agricultural harvester chains and boron-steel blades, Zenming motorcycle chains and RCL rigid push-chain platforms.

CHOHO Engine Chain Automotive & Engine Timing Chain Systems

The CHOHO Engine Chain Division (Qingdao Choho Industrial Co., Ltd.

and subsidiary Shanghai Hantong Automobile Spares Co., Ltd.) manufactures complete automotive engine timing drive systems under IATF 16949 quality management, validated for fatigue life, elongation and NVH performance in its CNAS-accredited testing center.

Complete timing chain kits (chains, sprockets, tensioners, PA66 101L guides) for VW EA888, BMW N46, Mercedes M271, Geely 4G18
Toothed silent chains: CL04 series (6.35 mm pitch, 9–14 kN), CL05 series (8.0 mm pitch, 12–16 kN) and CL06 (9.525 mm pitch)
Oil-hole bushing chains 04MF1-1, 05CF8-1, 06CF10-2 (21 kN), 06CF11-2 (20 kN) and cold-extruded seamless 05CF4-1, 06CF-1
Engine roller chains 04B-1, 05EF1-1..05EF3-1, 06EF3-1, 06BT-1/2 (up to 18.7 kN) and CFMOTO motorcycle/snowmobile engine chains

CHOHO Industrial Short-Pitch Roller, High-Strength T/HT & Self-Lubricating Chains

The CHOHO Industrial Chain Division manufactures ISO/ANSI precision short-pitch roller chains (A and B series, 1 to 4 strands), heavy-duty high-tensile T/HT/HS drive chains with thickened plates, and maintenance-free SL/RO self-lubricating chains with oil-impregnated sintered bushings.

ISO/ANSI standard drive roller chains: from 08A-1 (12.7 mm pitch, 13.9 kN) up to 48B-2 (76.2 mm pitch, 1000 kN) and 24B-4 (640 kN)
High-strength T and HT series: 80T-1 (74.2 kN) to 240T-3 (1920 kN) and 50HT-1 (30 kN) up to triple-strand 240HT-3 (2300 kN)
Self-lubricating SL and RO series: 40-SL-1 (12.7 mm pitch, 14.1 kN) up to 160SL-3 (50.8 mm pitch, 669 kN) and 120-RO (157 kN)
Engineered variants: high-fatigue resistance, high-wear resistance and corrosion-protected industrial drive chains

CHOHO Conveyor Chains & Heavy-Duty Engineering Chains (NE, NSE, ZYP)

For continuous material handling and heavy process industries, CHOHO produces straight-sideplate conveyor chains, double-speed accumulation chains, bucket elevator chains for cement clinker handling, and specialized engineering chains for palm oil mills, sugar plants and automotive assembly lines.

Standard conveyor chains C08A-1 to C32A-3 and C08B-1 to C32B-3 (12.7–50.8 mm pitch, tensile strength up to 670 kN)
Double-speed conveyor chains BS25-C206B, BS30-C206B, BS30-C216A (19.05–50.8 mm pitch), hollow-pin and attachment chains
Cement bucket elevator chains NE15-101.6 (100 kN) to NE500-350 (350 mm pitch, 1200 kN) and high-speed NSE800-175 (1500 kN)
Palm oil chains ZYP101.6V1, ZYP152.4V1 (100 kN), ZYP152.4V3 (450 kN), plus sugar mill, automotive welding and glove dipping chains

MAN-Certified Marine Diesel Engine Chains & Heavy-Duty Leaf Chains (LH / LL)

CHOHO is the sole domestic Chinese manufacturer certified by MAN Energy Solutions to supply roller chains for low-speed two-stroke marine diesel engines, alongside full production of LH (BL) and LL (AL) leaf chains for forklift masts and hoisting machinery.

MAN-certified marine diesel chains: 48B (76.2 mm pitch, 400.3 kN), 56B (88.9 mm, 542.7 kN), 64B (101.6 mm, 711.7 kN), 72B (114.3 mm, 898.5 kN)
Heavy-duty LH series leaf chains: from LH2022 (31.75 mm pitch, 2×2 lacing, 115.6 kN) up to LH3266 (50.8 mm pitch, 6×6 lacing, 867.4 kN)
Light-duty LL series leaf chains: from LL8022 (12.7 mm pitch, 18 kN) up to LL3266 (50.8 mm pitch, 780 kN)
Complete supply of A/B series industrial sprockets, stereo garage chains, side-bow chains and rubber-top chains

CHOHO Agricultural Machinery Chains, Saw Chains & Boron-Steel Tillage Parts

The CHOHO Agricultural Chain Division manufactures feeder house chain rake assemblies, 16 specialized combine and baler chain series, forestry saw chains, and water-quenched boron-steel ploughshares and rotary cultivator blades.

Feeder house & elevator chain rake assemblies: GS38P2W-64, GS38P2W-76, GS38P2W-80 (38.0 mm pitch, 3.0 mm plate, 470–630 mm bars)
Round and square baler chains 24AF1 (38.1 mm pitch, 127 kN) and CA650F3 (50.8 mm pitch, 90 kN), plus Cr/V-treated rice combine chains
Forestry saw chains in 0,325", 10,26 мм, 1/4", 3/8" LP and 3/8" Pro pitches alongside forged agricultural sprockets
Water-quenched boron-steel Model 50 ploughshares, 1T245 rotary tiller blades, harvester cutter blades and silage/mixer knives

CHOHO Motorcycle Chain Systems (Zenming, O-Ring, X-Ring, Star-Ring) & E-Bike Chains

The CHOHO Motorcycle Chain Division and Thailand DDC Sprocket Co., Ltd. produce the flagship 40Cr alloy-steel Zenming Chain System, seamless 50CrV4 roller chains, O-ring, X-ring and Star-ring sealed chains for 110–1300 cc motorcycles, six sprocket types and high-torque E-Bike chains.

Zenming Chain System (40Cr steel): sealed CL08CFM-5 (22.5 kN), CL09CFM-5 (30.5 kN), CL10CFM-5 (42 kN) and off-road CL08CFS-5 / CL09CFS-5
Seamless & off-road chains (50CrV4 plates): 428HS, 428HDS (20.6 kN), 520HDS, 530HS (30.5 kN), 420D (21 kN) and 520ND (33 kN)
X-ring series (428HX, 520O2, 520X, 520HX up to 33 kN) and heavy Star-ring series (520UX/525UX 34 kN, 520SX2/525SX2 38 kN, 525VZ/520EX/525EX 42 kN)
Six motorcycle sprocket designs (aluminium, bi-metal, steel, rubber-damped, split) and E-Bike chains (10-Speed, 11S, Z12DS)

CHOHO Rigid Push-Chain Intelligent Lifting Systems (RCL) & CHOHO Dexterous Hand

Shanghai CHOHO Robot Co., Ltd. engineers double-fastener rigid push-chain lifting platforms and linear actuators that interlock like a zipper to transmit compressive thrust, alongside the chain-driven CHOHO Hand for humanoid and industrial robotics.

Rigid push-chain lifting platforms RCL0300H10T & RCL2000M08T: lifting speeds up to 1000 mm/s with millimeter-level stroke repeatability
Horizontal and vertical rigid chain push devices: compact magazine storage eliminating deep hydraulic pits on assembly lines
CHOHO Hand chain-driven robotic dexterous hand: 17 DOF total (7 active + 10 passive: 5 DOF thumb + 3 DOF on each of four fingers)
CHOHO Hand specs: ±0.1 mm fingertip repeatability, 15 kg+ single-finger load, 40 kg+ whole-hand payload, >2 million cycles, 95–98% drive efficiency

CHOHO 10 Manufacturing & R&D Bases, CNAS Accredited Laboratory & Global Certifications

Listed on the Shenzhen Stock Exchange Main Board (Stock Code 003033), Qingdao Choho Industrial Co., Ltd. operates 10 manufacturing and R&D bases across China and Thailand, supported by 300+ R&D engineers and a CNAS-accredited laboratory.

10 production and R&D bases: Qingdao Pingdu HQ, Industrial Park, Baishahe, Shanghai (CHOHO, Hantong, Robot), Zhejiang and Thailand (CHOHO, DDC)
334 granted patents and participation in drafting 24 Chinese national and industry chain transmission standards
Quality management certified to IATF 16949, ISO 9001 and MAN Marine Roller Chain approval
Global OEM and aftermarket footprint across 120+ countries serving more than 3,000 industrial customers

Corporate structure of Qingdao Choho Industrial Co., Ltd. (CHOHO) and its business divisions

Founded in 1999 and headquartered at No. 112 Hongkong Road, Pingdu, Qingdao City, Shandong, China (P.C. 266700), Qingdao Choho Industrial Co., Ltd.

(brand CHOHO, 青岛征和工业股份有限公司) has been listed on the Shenzhen Stock Exchange Main Board since January 11, 2021 (A-share Stock Code: 003033, registered capital 81.75 million RMB).

The group operates 10 manufacturing and R&D bases across China and Thailand: Qingdao Pingdu HQ, CHOHO Industrial Park, Pingdu Baishahe Factory, CHOHO Shanghai, Shanghai Hantong Automobile Spares Co., Ltd., Shanghai CHOHO Robot Co., Ltd., CHOHO Industry (Zhejiang) Co., Ltd., CHOHO Industrial

(Thailand) Co., Ltd. and Thailand DDC Sprocket Co., Ltd.

Backed by more than 300 R&D engineers, 334 authorized patents and a CNAS-accredited testing center, CHOHO has participated in drafting 24 national and industry standards for chain drives.

Its global portfolio spans four dedicated industrial business divisions—each covered by a specialized technical page on our platform: CHOHO Engine Chain (automotive timing systems), CHOHO Industrial Chain (drive, conveyor, leaf, engineering, MAN marine chains and rigid push-chain equipment), CHOHO

Agricultural Chain (harvester chains, saw chains and boron-steel tillage parts), and CHOHO Motorcycle Chain (Zenming chain systems, O/X/Star-ring chains, sprockets and E-Bike chains).

When submitting an inquiry, please provide the chain model stamped on the link plate, pitch, number of strands or links, attachment code, or the equipment/engine model.

Engine Chain Division: IATF 16949 automotive timing chain kits, silent and bushing chains

The CHOHO Engine Chain division (including Shanghai Hantong Automobile Spares Co., Ltd.

and the automotive portal chohoacs.com) supplies complete OEM and aftermarket engine timing kits comprising timing chains, oil pump chains, precision sprockets, hydraulic/mechanical tensioners and high-toughness PA66 101L nylon guide rails for VW/Audi EA888, BMW N46, Mercedes-Benz M271, Geely 4G18,

GM, Honda Civic, Jiangling, Kia Forte, Toyota, Nissan, Hyundai and Ford engines.

Toothed silent chains are manufactured from German strip steel with chrome-plated pins across 6.35 mm pitch (CL04F1-9, CL04CF2-7, CL04CF2-9, CL04CF6-9, CL04CF7-9, CL04CF10-9, CL04CF11-8, CL04CF14-5; 9–14 kN tensile load), 8.0 mm pitch (CL05F-5, CL05CF-7, CL05CF-8, CL05CF1-8, CL05CF2-5, CL05CF3-7;

12–16 kN) and 9.525 mm pitch (CL06CF2-8).

Engine bushing and roller chains cover oil-hole roll-sleeve chains 04MF1-1 (7 mm pitch, 6.86 kN), 05CF8-1 (8 mm, 8.5 kN), 06CF10-2 (9.525 mm, 21 kN), 06CF11-1 (10 kN) and 06CF11-2 (20 kN), cold-extruded seamless bushing chains 05CF4-1, 05CF7-1 (8.5 kN) and 06CF-1 (12.5 kN), and engine roller chains

04B-1, 05EF1-1..05EF3-1, 06EF3-1, 06EF4-1, 06B-1/2 and 06BT-1/2 (up to 18.7 kN), plus CFMOTO motorcycle and snowmobile engine chains.

Industrial Chain Division: ISO/ANSI roller, conveyor, leaf, cement elevator and MAN marine chains

The CHOHO Industrial Chain division manufactures ISO/ANSI A and B series short-pitch precision roller chains in 1 to 4 strands—from 08A-1 (12.7 mm pitch, 13.9 kN) up to 48B-2 (76.2 mm pitch, 1000 kN), 36A-3 (843 kN) and 24B-4 (640 kN)—alongside heavy-duty T/HT/HS chains (80T-1 to 240T-3 at 1920 kN,

and 50HT-1 to triple-strand 240HT-3 at 2300 kN) and maintenance-free SL/RO oil-impregnated self-lubricating chains (40-SL-1 to 160SL-3 and 120-RO).

Material handling and heavy engineering lines cover C08A/B–C32A/B straight-sideplate conveyor chains (up to 670 kN), BS25-C206B, BS30-C206B and BS30-C216A double-speed conveyor chains, heavy LH2022–LH3266 (up to 867.4 kN) and light LL8022–LL3266 (up to 780 kN) forklift leaf chains, NE15–NE500 (up to

1200 kN) and NSE800-175 (1500 kN) cement bucket elevator chains, and ZYP101.6V1 / ZYP152.4V3 (up to 450 kN) palm oil mill chains.

CHOHO is the only Chinese enterprise certified by MAN Energy Solutions to produce marine diesel roller chains for low-speed two-stroke marine engines: sizes 48B (76.2 mm pitch, 400.3 kN), 56B (88.9 mm, 542.7 kN), 64B (101.6 mm, 711.7 kN) and 72B (114.3 mm, 898.5 kN).

Agricultural Chain Division: harvester chain rakes, baler chains, saw chains and boron-steel blades

The CHOHO Agricultural Chain division produces complete feeder house and elevator chain rake assemblies (GS38P2W-64, GS38P2W-76, GS38P2W-80 with 38.00 mm pitch, 3.0 mm plate thickness and 470–630 mm bolted scraper bars), round/square baler chains 24AF1 (38.1 mm pitch, 127 kN) and CA650F3 (50.8 mm

pitch, 90 kN), chromed/vanadized rice harvester chains, and 16 specialized agricultural chain families for corn, wheat, sugarcane, cotton and root crops.

Forestry and tillage lines include 8,25 мм, 10,26 мм, 1/4", 3/8" LP and 3/8" Pro saw chains, induction-hardened agricultural sprockets, water-quenched boron-steel Model 50 ploughshares, 1T245 rotary cultivator blades, alloy harvester cutter blades, and silage/TMR mixer knives.

Motorcycle Chain Division & Intelligent Equipment: Zenming, Star-Ring, RCL push chains and CHOHO Hand

The CHOHO Motorcycle Chain division and Thailand DDC Sprocket Co., Ltd.

produce the 40Cr alloy-steel Zenming Chain System (sealed CL08CFM-5 at 22.5 kN, CL09CFM-5 at 30.5 kN, CL10CFM-5 at 42 kN; off-road CL08CFS-5 and CL09CFS-5), 50CrV4 seamless roller chains (428HS, 428HDS, 520HDS, 530HS, 420D, 520ND), X-ring chains (428HX, 520O2, 520X, 520HX up to 33 kN), heavy

Star-ring chains for 200–1300 cc motorcycles (520X2, 520UX, 525UX, 520SX2, 525SX2, 525VZ, 520EX, 525EX up to 42 kN), six sprocket types, and E-Bike chains (10-Speed, 11S, Z12DS).

Shanghai CHOHO Robot Co., Ltd.

supplies double-fastener rigid push-chain lifting platforms (RCL0300H10T, RCL2000M08T; up to 1000 mm/s) and the chain-driven CHOHO Hand robotic dexterous hand featuring 17 DOF (7 active + 10 passive), ±0.1 mm fingertip repeatability, 15 kg+ single-finger load, 40 kg+ whole-hand load, >2 million

cycles and 95–98% transmission efficiency.

International B2B supply, OEM customization and quality documentation

We coordinate global export deliveries of CHOHO chain systems, sprockets, tillage blades and rigid push-chain actuators in factory-sealed reels, pre-cut lengths with connecting links, or complete assembly kits.

Send us your target CHOHO part number, ISO/ANSI chain code, engineering drawing or equipment nameplate to receive a technical quotation.

Lead times, minimum order quantities and pricing for CHOHO chain systems are calculated individually upon commercial request; public price lists are not published by the manufacturer, and batch test certificates are provided with shipment.

We operate as an independent B2B supplier, not an authorized distributor of Qingdao Choho Industrial Co., Ltd.