(1) In order to prevent the file from being worn too quickly, do not use the file to cut the hard skin or work of the blank.
The hardened surface of the piece should be processed first with other tools or with the front end and side teeth of the file.

(2) When filing, one side of the file should be used first, and then the other side should be used after this side is blunt.
Because the used cut teeth are easy to rust.

(3) Make full use of the effective working surface of the file when filing to avoid local wear.

(4) The file cannot be used as a tool for assembly and disassembly, knocking and prying, to prevent the material of the file from being damaged.
brittle and broken.

(5) When using plastic files and small files, the force should not be too large to prevent the knife from breaking.

(6) The file should be waterproof and oil-proof. The file is easy to rust when wet. When the file is working after oiling
Slippery.

(7) During the filing process, if it is found that there are chips embedded in the filing pattern, it should be removed in time to avoid
No chips will scratch the machined surface. After the file is used up, use a file brush or a copper sheet to brush along the file pattern
Remove any remaining chips to prevent rust. Never blow chips with your mouth to prevent chips
fly into the eye.

(8) When placing the file, avoid contact with hard objects, and avoid overlapping and stacking the file and the file.
Prevent damage to the file.

Ningbo Tiangong Great Star Tools Co.,Ltd since 1971,enjoys great prestige in the professional manufacture hand tools company of the circle and now is the important production foundation for hand tools.Ningbo Tiangong Great Star Tools Co.,Ltd has developed from needle file and hundred RMB net capital into a corporation with 280 employees and more than 0.1 billion RMB net assets.Ningbo Tiangong Great Star Tools Co.,Ltd since 1958. The registering capital is about 4.15 million RMB. The company covers 30 thousand square meters, building area covers 23 thousand square meters. Company has more than 280 employees and sales amount was 20 million USD in last year. Its main products include hand tools, wood chisel, wood plane, flat wood bit,cold chisel,SDS&masonry drill bit, file&rasp, masonry drill etc. Company passed ISO9001 and BSCI quality management system, and GS, TUV, FSC product quality certification. Ningbo Tiangong Great Star Tools Co.,Ltd is also the permanent members in Ningbo National Hardware Association.Company main products include: wood chisel, wood plane, flat wood bit,cold chisel,drill bit, file&rasp etc.

Ningbo Tiangong Great Star Tools Co.,Ltd main products market share: 99% products sells overseas, 1% sells domestic and sales amount without tax is 101 million RMB last year.North American&South American 50%，EUR 40%，South Africa 5%，Other 5%。