Hebei Hongjiang Rubber&plastic Technology Co., Ltd.
Wen'an Juwante Pipe Industry Co., Ltd.
Weifang Fulilong Plastic Technology Co., Ltd.
Suqian Changen New Materials Co., Ltd.
Jiangyin Huada Polyester Plastic Co., Ltd.
Jinan Hongshengyuan Water Saving Irrigation Co., Ltd.
