Hazan shoes co . , ltd , which is a new powerful force we have become the elite in china shoes capital for the experience of dozers of years since our company was found in 1991 . we grown up rapidly in recent years . hazan has been a famous brand in oversea market and we take a great scale in foreign trade 温州哈杉鞋业有限公司，前身为温州恒丰皮鞋厂，创建于一九九一年，是一家集设计开发生产销售皮鞋和休闲鞋为一体的，拥有自营出口权的民营企业。
It provides sales , marketing , after - sale service and spare parts for liebherr products mainly focusing on hydraulic and wheel excavators , loaders , dozers and mining equipments ; tower cranes , crawler and mobile cranes ; aircraft equipments like landing gear , actuators and air management systems 公司负责的主要产品包括液压和轮式挖掘机、装载机、推土机和矿用自卸车；塔式起重机、履带式和汽车式起重机；起落架，作动器和空气调节与管理系统等航空设备等。
Remote control construction machinery will be more and more widely used along with development of technique and perfection of function of wireless control system and electro - hydraulic control system . the remote controlled trimming dozer is remotely controlled by signal that is transferred by electromagnetic wave and sent into driver - electro - hydraulic control system 随着无线电控制系统和电液控制系统的技术发展和功能完善，遥控型工程机械应用范围将越来越广泛，遥控型推耙机通过电磁波传输控制信号并将控制信号送入驱动执行器?电液比例控制系统以实现远距离控制。
The basic principle of hydraulic system of tb80k trimming is set forth . the changing process of engaging pressure is analyzed and studied , the engaging pressure is produced in transmission controlled by electro - hydraulic proportion when shift gear is switched ; the hydraulic control system used in remote control is studied and designed applied with electro - hydraulic proportional control theory and on the basic of the hydraulic characteristic of tb80k trimming dozer , more and more electro - hydraulic reform projects and assumption are present 本文阐述了tb80k推耙机液压系统的基本原理；对电液比例控制变速箱换档在各档之间切换的接合压力变化过程进行试验分析研究；应用电液比例控制理论，结合tb80k推耙机液压系统结构特点进行遥控液压控制系统研究和设计，并提出了多种电液改造方案和设想。
A9 . there could be several reasons that an application for a qpme label could be refused . the possible ones are that equipment certificates attached do not meet with eu or mlit japanese standards ; the output power of excavator , loader and dozer is equal to or more than 500 kw or that of generator is equal to or more than 400 kw ; insufficient or missing information in the application form ; or the supporting documents are missing or incomplete 答9拒绝发出优质机动设备标签的理由有多个，最常见的是1有关机动设备的证明文件不符合欧盟和日本国土交通省两国制度的相关要求2挖土机搬土机及推土机的输出功率相等或高于500千瓦，而发电机的输出功率则相等或高于400千瓦3申请表所载资料不足或有缺漏或4证明文件有缺漏或不全。
