（一）INTRODUCTION

This product is manufactured by our company that combining with the internal and external base of advanced technology and craft. The material of heat-exchange pipe, adopted low-rib finned red copper pipe, used the structure of transverse current breaker board, turbulence board and the advanced  manufacture craft  of mechanism expanding, has the features of novel structure, small dimension, light weight and well heat-exchanging effect and soon. This product is a new type and high efficiency cooler,  mainly used in low-viscosity hydraulic and oil system to cool the work oil to the specified temperature. So it is an Ideal cooling facility that can be widely used in cooling the hydraulic equipment in the trade such as chemical industry,electric power, metallurgical industry, mine and light industry and soon. 

(5) to choose the way of the cooler