Import 3.5inch-30inch Four Wire Resistive Touch Screen — Buy in Bulk from Supplier in China

The 3.5-inch to 30-inch Four Wire Resistive Touch Screen from Chengdu Zosuntek Technology Co., Ltd. is a precision input device built on a dual-layer ITO (indium tin oxide) construction, combining ITO glass substrate with ITO film overlay to achieve optical clarity and consistent touch sensitivity across its full dimensional range. The four-wire architecture measures touch position through voltage gradient detection across the conductive layers, with a stated reaction time of 10 ms or less and surface hardness rated at 3H pencil hardness for scratch resistance. Sizes span compact 3.5-inch panels through large-format 30-inch displays, allowing integration across handheld, desktop, and embedded industrial applications.

The ITO glass base provides dimensional stability and electrical uniformity, while the ITO film layer delivers the flexible top surface needed for resistive actuation. A four-wire controller samples X and Y axis voltages to resolve touch coordinates, typically achieving linearity within ±1.5% and drift specifications under 2% after environmental cycling. Standard industry construction places a dot spacer between layers to prevent false contact, with activation force typically ranging from 20 to 80 grams depending on overlay thickness and spacer geometry. The 3H pencil hardness indicates moderate abrasion resistance, suitable for controlled indoor environments with stylus or finger operation.

Primary buyers include OEMs building kiosks, medical devices, industrial HMIs, and point-of-sale terminals where cost-effective, gloved-hand, or stylus input outweighs multi-touch demands. The resistive technology operates reliably through contaminants and moisture films that capacitive screens reject, making it preferred for factory floor, outdoor, and field-use equipment. Importers should confirm controller interface compatibility, FPC connector pitch, and any required anti-Newton ring coatings or hardcoat treatments with Chengdu Zosuntek Technology Co., Ltd. directly, as these details are not specified in the source material.

Chengdu Zosuntek Technology Co., Ltd. is based in Chengdu, Sichuan Province, China, operating from a location in the city's technology manufacturing corridor. The company holds a harbor trust tier on the sourcing platform, indicating a baseline verification status rather than advanced audit certification. Its response rate is recorded at 0.00% with zero average response hours, suggesting either a newly registered profile, inactive account, or data reporting anomaly that buyers should verify before reliance.

The supplier's listed product focus centres on four-wire resistive touch screens spanning 3.5-inch to 30-inch diagonals, with stated capabilities in ITO glass and ITO film construction. No factory size, production capacity, year of establishment, ISO certification status, or major client references are provided in the available profile. Buyers should request audited factory credentials, sample lead times, existing customer references, and quality control documentation directly from Chengdu Zosuntek Technology Co., Ltd. before committing to volume orders.