平台原始字段（来自 API 响应或 CSV 导入）：
{
"add_time": "2024-03-26 16:03:03",
"barcode": "",
"biz_type": 1,
"cates": [
{
"cate_id": 151451478,
"cate_name": "妙慧山茶（普洱）",
"sort_num": 8
}
],
"chain_store_sync": false,
"cost_price": "",
"fx": 0,
"fx_fee_rate": "0.0",
"h5Url": "https://weidian.com/item.html?itemID=7230427415",
"imgs": [
"https://si.geilicdn.com/pcitem1790250396-52710000018e79bed54d0a813276_4160_3120.jpg?w=480&h=480&cp=1"
],
"istop": 0,
"item_desc": "【漫农语茶】甘香·清明·生普|采自生态美丽的西双版纳境内的古六大茶山核心山头茶。",
"item_name": "【漫农语茶】甘香·清明·生普|采自生态美丽的西双版纳境内的古六大茶山核心山头茶。",
"item_simple_name": "普洱茶|生普",
"itemid": "7230427415",
"merchant_code": "",
"price": "2850.00",
"self_create": true,
"seller_id": "1867168977",
"skus": [],
"sold": 0,
"status": 2,
"stock": 50,
"thumb_imgs": [
"https://si.geilicdn.com/pcitem1790250396-52710000018e79bed54d0a813276_4160_3120.jpg?w=110&h=110&cp=1"
],
"tiaohuo_item": false,
"update_time": "2025-04-09 09:12:56"
}