Customer Stories

Japanese-standard comprehensive rain‑testing chamber: Yuexin provides support to HuaGong GaoLi in delivering high quality.

Transaction Date: April 2015	Customer Location: Xiaogan City
Test Requirement: Automotive Parts Waterproofing Test	Equipment Selection: Japanese‑Standard Comprehensive Rain Test Chamber

HuaGong GaoLi is a high-tech, publicly listed company with a university-affiliated background—HuaGong Technology Industry Co., Ltd. (stock code: A core subsidiary of 000988, founded in 1988, it has established the world’s largest industrial base for sensitive functional ceramic components in the Xiaogan National High-Tech Industrial Development Zone. The industrial park covers an area of 150,000 square meters, with an annual production capacity of 1 billion units and a workforce of over 2,000 employees. Its main product lines include NTC thermistors, PTC thermistors, and automotive electronics. In particular, its air-conditioning temperature sensors command more than 70% of the global market share.

In April 2015, Yuexin supplied Wuhan Huagong Gaoli Electronics with a rain‑test chamber that complies with both Japanese and Chinese standards.

In this collaboration, in light of the stringent water‑pressure specifications stipulated by Japanese standards, Yue Xin’s engineers departed from conventional practices. Rather than relying on the traditional approach used in rain‑test chambers, they directly employed a constant‑pressure sensor to maintain stable spray‑water pressure.

Japanese Standard for Hydraulic Pressure Requirements - Source: JID 0203

Japanese-standard rain testing primarily comprises four conditions, one of which is spray from a rotary nozzle. R1/R2 (with two spray nozzles) and the nozzle‑mounted water sprays S1/S2 (with 40 nozzles). During testing, the primary difference among the various configurations lay in the water pressure. Consequently, HGGL places great emphasis on maintaining a constant yet adjustable water pressure. Leveraging years of industry expertise, Yuexin has provided customers with an effective solution. We have incorporated high‑quality water‑pressure sensors and implemented PLC‑based control to regulate pressure, enabling digital adjustment directly on the touch screen. This approach is highly convenient for users and delivers robust operational performance.

Japanese-standard comprehensive rain test chamber

Japanese-standard comprehensive rain test chamber - Huagong Gaoli site

Japanese-standard comprehensive rain test chamber

Huagong Gaoli - Rain-Testing Laboratory

Currently, the equipment has been in use for more than Over four years, follow-up inspections have confirmed that this integrated rain‑test chamber continues to deliver reliable testing performance.

This article is originally authored by Yuexin Company. Please cite the source when reprinting. www.yxipx.cn).

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