Антрон, чда (фас.)

We need to produce product description in Russian for B2B chemistry site, with categories, HTML tags, bold headings h2, lists, include synonyms, keywords like "купить", "цена", "оптом", "доставка". Use placeholders Казани and {}. No mention of contact, no bold words other than headings, no quotes except needed. No direct city names, only placeholders. Must not use bold for anything other than h2 headings so we can wrap headings in

...

and inside we can have bold? The instruction: "Выделять жирным именно заголовки но не h1, а h2." Means headings should be bold and h2. Typically we can use

Физико-химические характеристики

maybe. But they said not to use bold words and/or apostrophe except for headings? They said "Не выделять слова жирным шрифтом и\или апострофом." That means we cannot bold any words except the headings? Actually they say not to bold words and/or apostrophe. But earlier they say "Выделять жирным именно заголовки но не h1, а h2." So we need to bold the headings, but not any other words. So we can use

...

for headings. For other text, no bold. Also we need to avoid quotes except those needed by Russian language rules. Likely we can avoid quotes altogether. We need to ensure description length <=600 characters. SEO <=200 characters. We must include categories: Физико-химические характеристики, Применение, Меры предосторожности, Упаковка, Хранение, Транспортировка. We need to use synonyms/short versions: maybe "Антрон", "Антрон ЧДА", "Антрон фас.". Use them. We need to include keywords: купить, цена, оптом, доставка, maybe "партия", "оптовая поставка". Use placeholders Казани and {}. We need to avoid mentioning how to contact. We need to avoid using real city names. We must not use quotation marks unless needed by Russian language rules like for titles. Safer to avoid any quotes. We must not use apostrophe for emphasis. So avoid using apostrophe for emphasis like '...'. Russian language may need apostrophe in some words? Probably not. We need to ensure the description uses HTML tags, but we need to keep within 600 characters counting everything? Likely yes. We need to produce answer strictly in format:...