The same type of material is used in the printing of books and newspapers. A similar reaction occurs in photocopiers and laser printers. This is an example of how one type of chemical reaction has helped change industry and society in important ways.
Gradually thicken the formula with ground up dry puppy food or begin adding canned puppy food to their weaning mixture. By six weeks of age the puppy should be eating four meals a day of a high quality puppy food. You can break up kibble so it is smaller than packaged or soak it a bit in warm water to soften it up. It is also good idea to get pups acquainted with both canned and dry food. And don't forget the water. You should introduce your puppy to the water dish the same way you did to the puppy weaning formula.
A carbon or stainless steel wok spatula chuan or ladle hoak is standard. Carbon steel woks don't hold seasoning like cast iron; instead, you redevelop the seasoning with every use when cooking over high heat. Even so, it shouldn't scratch off that easily. You can reseason by cooking something with a bit of oil over very high heat (the wok should be smoking) until the bottom blackens.