Pa 9 May mpaka 11 May 2019, Ningbo Honghuan Geotextile Co., Ltd adapita ku Sichuan International Environmental Protection Industry Expo, yomwe imachitikira ku Chengdu.

Century city new international exhibition center.

Ili ndi zinthu zophatikizika zofananira monga:

Kupewa ndi kuwongolera kuwonongeka kwa madzi,

Kupewa komanso kuwongolera kuwonongeka kwa mpweya,

ukadaulo wakutaya zinyalala zolimba,

Ukatswiri wokonzanso nthaka ndi madzi apansi panthaka,

Kukonzanso zachilengedwe.