To balance the car and save money, they put the battery under the driver’s seat—an example of the smart but ascetic engineering that can produce an impressive car for $2,000.
Later water-proofing agent can a complete waterproof mortar precausions engineering, flexible waterproofing than simple process, province hours, save Labour 100%.
防水剂能一次完成防水砂浆抹面工程， 比柔性防水工艺简单、省工时， 节省人工费100%。
3
The state of coal enterprise and necessity of joining bids system are introduced. It can increase the success rate in the engineering technology reform and save money.