Baoding Changkong Petroleum Industry Co., Ltd., established on 2008-07-04, Business scope includes special equipment for environmental protection,double layer oil tank,metal can(without pressure vessel),tank,oil equipment,floating plate,Oil pump manufacturing,Sales;Instrumentation,electronic product,Research and development of communication equipment,Sales;software development;Information system integration service,Internet of Things Technology Services,Operation and maintenance service,Information processing and storage support services;oil tools,Lubricating oil in barrels,Fire equipment,building materials,steel,diesel fuel(Excluding closed cup flash point ≤60ºChazardous chemicals,no storage),Daily necessities,food,textile,knitwear,Clothing sales,cigarette,Cigar Retail;Construction machinery and equipment operating leasing,Daily necessities rental,Metal can rental,Cleaning and loading and unloading,Oil pump installation and maintenance;Chemical and petroleum equipment installation engineering,Fire facilities engineering,Steel structure engineering,Earthwork,Mechanical and electrical equipment installation engineering,Anti-corrosion and thermal insulation engineering professional contracting(Carry out business activities with qualification certificates);General cargo road transport(No dangerous chemicals and flammable and explosive goods transportation),Large cargo road transport(No dangerous chemicals and flammable and explosive goods transportation);Real estate development and management;Self-owned commercial housing rental service;property management;Public building decoration and renovation,Residential Decoration and Renovation,Building curtain wall decoration and decoration.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)