standard standard of vo|

Authenticity,Repairing the Old Like the Old

new-generation-old reservoir-old sealing formation

Old Day Embedded in Old Dictionary

old oil =old crude

old well in old field

Remain old appearances of old buildings in restora

repair the old as old

95th standard project standard

adoption of international standard and advanced oversea standard

QUALITY STANDARD(OEKO-TEX STANDARD 100\ISO9002\SGS\ITS\AATCC\M&S)

shortened rail；standard shortened rail；fabricated short rail used on curves；standard curtailed rail

Standard addition method and internal standard method

Standard and non-standard TV systems

standard of aroma type and standard sample

“Thousand year old”duck eggs

≤40 years old

≥55 years old

0 - 4-year-old children