Naqu Prefabricated Mobile Toilet

The Naqu prefabricated mobile toilet is a modular public restroom system specifically designed for high-altitude, low-temperature, and strong sandstorm environments. It is suitable for all 11 counties and districts in Naqu City, with a focus on evaluating five core indicators: insulation, freeze resistance, structure, sewage disposal, and operation and maintenance.

I. Core Design Features

1. Structure and Materials
   It utilizes modular steel structures or composite insulation panels (such as polyurethane sandwich panels), offering freeze resistance, corrosion resistance, and UV protection. For example, the main model from Guting Metal Products uses a 304 stainless steel frame with 80mm-thick polyurethane panels, while Jinmuhe achieves single-stall assembly in 6 hours through a modular quick-installation structure.
2. Functional Integration
   It integrates handwashing, sewage disposal, lighting, and ventilation systems, with some models equipped with solar power, hot water supply (e.g., gas instant heating modules), and Tibetan-Chinese bilingual operation screens. The garden-style public restrooms supplied by Jiexin also support customization with metal carved panels.

II. Key Selection Indicators

1. Insulation Performance
   The wall heat transfer coefficient must be ≤0.45 W/(m²·K), and the door frame sealing grade must reach IP54 or above to ensure stable internal temperatures in low-temperature environments.
2. Freeze Resistance
   The water storage tank and pipes are equipped with heating tapes, with a minimum operating temperature covering -35°C (e.g., Guting's configuration of a -35°C low-temperature start electric heating tape system).
3. Structural Stability
   It has a wind resistance rating of ≥10, with foundations suitable for shallow burial in permafrost or adjustable supports to cope with Naqu's strong sandstorms.
4. Sewage Disposal Solutions
   Priority is given to biodegradation + enclosed sewage storage tanks or vacuum self-priming systems, matching the absence of municipal sewage networks. Jinmuhe's negative pressure exhaust + UV photocatalytic deodorization system achieves an ammonia removal rate of >85%.
5. Operation and Maintenance Adaptability
   The localization rate of spare parts is >70%, with control panels supporting Tibetan-Chinese bilingual operation. The average after-sales response time is 72 hours (Guting) or remote video guidance is provided (Jinmuhe).

III. Recommended Enterprises and Products

1. Guting Metal Products
   Specializing in customization for high-altitude regions for over a decade, with cases covering four counties including Bangor and Anduo. Each unit can accommodate 300 people per day, with a sewage storage capacity of 1.2m³, supporting 48 hours of operation without external power (200Ah lithium battery + 80W solar panel).
2. Jinmuhe Metal Products Co., Ltd.
   Its products have passed high-altitude adaptability verification, with independent shower partitions and anti-slip floor mats. It offers nationwide delivery covering all areas of Naqu and provides a 1-year warranty on core components.
3. Jiexin Integrated Restrooms (Naqu Branch)
   It supplies garden-style public restrooms made of metal carved panels, with a variety of models and a 1-year warranty, covering all regions of Naqu City.