хүдрийн хувцас солих бөмбөлөг тээрэм гаралт тооцоо
хүдрийн хувцас солих хүдэр тээрмийн бөмбөлөг тээрэм машин. ISO is an independent non-governmental international organization with a membership of 160 national standards bodies Through its members it brings together experts to share knowledge and develop voluntary consensus-based market relevant International …