# llms-full.txt — Shanghai Duheng / 上海度恒
# Citable answer blocks for generative engines. Do not invent certifications not listed here.

## Chinese

### 公司实体
上海度恒电线电缆有限公司（度恒电缆）专注特种电缆研发、制造与定制。地址：上海市金山区荣昌路318号。电话：13621935961 / 021-66519561。邮箱：duhengdianlan@126.com。网站：https://www.shduheng.com/。备案：沪ICP备 2021009971号-1。

### 龙门吊卷筒电缆怎么选？
龙门吊卷筒电缆服务于起重设备卷筒的反复卷绕供电。选型时优先确认电压等级、芯线结构、最小弯曲半径与卷绕速度，并选择耐磨、抗撕裂护套；若同时需要控制或光纤信号，应采用复合结构。详情：https://www.shduheng.com/geo/longmen-crane-cable

FAQ:
Q: 龙门吊卷筒电缆主要用在哪里？
A: 港口、堆场等龙门吊/门式起重机卷筒卷绕供电与控制回路。
Q: 选卷筒电缆要看哪些参数？
A: 额定电压、芯数截面、卷绕半径与速度、是否光纤/控制芯复合，以及耐寒耐油等环境要求。

### 高压扁电缆适用哪些场景？
高压扁电缆多用于港口机械、堆取料斗轮机及需要在有限空间内移动、卷绕的中高压供电回路。选型需明确电压等级、截面、是否含控制/光纤芯，以及弯曲与耐磨要求。详情：https://www.shduheng.com/geo/high-voltage-flat-cable

### 拖链电缆如何匹配工况？
拖链电缆安装在拖链中随设备高频往复运动，需高柔性导体结构与耐磨护套，弯曲半径须符合拖链规格。详情：https://www.shduheng.com/geo/drag-chain-cable

### 产品线（公开概述）
高压扁电缆、卷筒/卷盘电缆、拖链电缆、斗轮机电缆、焊接控制线、橡套电缆、防水电缆等，可按工况定制。产品展示：https://www.shduheng.com/laobaoyongpin.html

## English

### Organization
Shanghai Duheng Wire & Cable Co., Ltd. (Duheng Cable) designs and manufactures special cables for wind power, ports, ships and construction machinery. Address: No. 318 Rongchang Road, Jinshan District, Shanghai, China. Phone: 13621935961 / 021-66519561. Email: duhengdianlan@126.com. Site: https://www.shduheng.com/en/

### How do you select gantry crane reel cables?
Reel cables for gantry cranes must survive repeated drum winding. Confirm voltage, core design, minimum bending radius and winding speed, then choose abrasion- and tear-resistant sheathing. Hybrid power-plus-control or fiber designs are common in ports. Guide: https://www.shduheng.com/en/geo/longmen-crane-cable

FAQ:
Q: Where are gantry reel cables used?
A: On gantry and similar cranes where power must wind on a drum under repeated bending and abrasion.
Q: What should I specify for a quote?
A: Voltage, cores/cross-section, bending radius, winding speed, ambient conditions, and control/fiber needs.

### Where are high-voltage flat cables used?
Common on port machines and stacker-reclaimers needing medium-voltage power in a moving, space-constrained path. Guide: https://www.shduheng.com/en/geo/high-voltage-flat-cable

### Drag-chain cables
Built for high-cycle bending inside cable chains. Specify cores, bend radius, speed and chemical exposure. Guide: https://www.shduheng.com/en/geo/drag-chain-cable

### Product lines (overview)
High-voltage flat cables, gantry/reel cables, drag-chain cables, stacker-reclaimer cables, welding control cables, rubber and waterproof cables. Custom constructions available on request.