ZTZG lub raj kheej kheej kheej uas tsim cov Rollers-sharing technology yog ib hom tshiab ntawm ERW Steel Pipe manufacturing process.Cov thev naus laus zis no tuaj yeem ua tiav qhov kev sib koom ntawm cov pwm rau qhov sib sau ua ke ntawm cov kav dej puag ncig, uas tuaj yeem pab txuag lub sijhawm rau kev hloov cov menyuam thiab txhim kho kev ua haujlwm zoo.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-02-2024
