The user wants a Chinese article, natural, conversational style, about how to choose a large website construction company, three key points. Must be at least 1500 words, not less than 1050. Title is fixed, but they ask to output only the body, not the title. Must be 6-8 paragraphs, each 150-250 characters? They said 150-250字 (words? Chinese characters). So each paragraph 150-250 Chinese characters. Must be 6-8 paragraphs. Must be 1500+ characters total. They want "直接输出正文，不要标题". So we must output only the article body, no title.

We need to ensure length: 1500 Chinese characters minimum. Let's plan 7 paragraphs of about 220 characters each => 1540 characters. That meets requirement. Use natural tone, avoid AI jargon. Use short sentences, active voice, etc.

Structure: 6-8 paragraphs. We'll do 7 paragraphs.

Paragraph 1: introductory, echo title, talk about why picking a big web dev firm matters.

Paragraph 2: first key point: portfolio and case studies, evaluate real projects.

Paragraph 3: second key point: technical capability and team, evaluate tech stack, processes.

Paragraph 4: third key point: service and support, post-launch maintenance, communication.

Paragraph 5: additional considerations: price vs value, contract terms, cultural fit.

Paragraph 6: practical steps: how to conduct research, meetings, trial projects.

Paragraph 7: concluding, tie back to title and give final advice.

Need each paragraph 150-250 Chinese characters. Let's aim for ~220 characters each.

We must avoid AI clichés. Use natural language, short sentences.

We need to count characters roughly. Let's draft each paragraph about 220 characters.

Paragraph 1: about 220 characters.

Paragraph 2: about 220.

Paragraph 3: about 220.

Paragraph 4: about 220.

Paragraph 5: about 220.

Paragraph 6: about 220.

Paragraph 7: about 220.

Total ~1540 characters.

I'll craft each paragraph with roughly 220 characters. Count manually approximate.

"选一家大型网站建设公司，就像挑一辆合适的跑车，车身很大，但细节决定体验。很多企业在找合作伙伴时，往往只看规模、看名字，却忽略了真正能落地的细节。其实，真正的关键在于找到那种既能提供完整方案，又能在项目推进中保持灵活、透明的团队。本文把‘比较大的网站建设公司’这个命题拆解成三大要点，帮助你在众多选手中快速锁定靠谱的伙伴。"

Now count characters: Let's count roughly. I'll count characters manually.

"选一家大型网站建设公司，就像挑一辆合适的跑车，车身很大，但细节决定体验。" That's about 30? Let's count precisely later. But we need ~220 characters total per paragraph. Let's aim for longer.

Better to write more content.

Paragraph 1 full maybe 230 characters.

"网站已经不再是单纯的展示窗口，而是企业的核心业务入口。于是，很多公司开始寻找能够一次性解决设计、研发、上线全流程的大型网站建设公司。然而，规模不等于实力，名字不等于结果。今天我们就聊聊‘比较大的网站建设公司’，到底该怎么挑，才能避免踩坑、浪费预算，最终交付出真正能驱动业务增长的平台。"

Now count characters: Let's approximate. Might be ~150. Need 150-250 characters. It's okay if a bit less but need overall 1500. We'll ensure each paragraph length roughly 200-250.

Paragraph 1 maybe 230 characters.

I'll count roughly: I'll count words.

"网站已经不再是单纯的展示窗口，而是企业的核心业务入口。" (33 characters?) Actually Chinese characters count each. Let's approximate length later.

Better to just write enough.

We'll produce 7 paragraphs each around 220 characters. Let's write them fully.

I'll draft each paragraph with about 220-250 characters.

"网站已经不再是单纯的展示窗口，而是企业的核心业务入口。于是，很多公司开始寻找能够一次性解决设计、研发、上线全流程的大型网站建设公司。然而，规模不等于实力，名字不等于结果。本文把‘比较大的网站建设公司’这个命题拆解成三大要点，帮助你在众多选手中快速锁定靠谱的伙伴，避免踩坑、浪费预算，最终交付出真正能驱动业务增长的平台。"

Now count characters: Let's count roughly.

"网站已经不再是单纯的展示窗口，而是企业的核心业务入口。" That's 27? Actually count: 在(1) 互(2) 联(3) 网(4) 时(5) 代(6)，网(7) 站(8) 已经(9) 不(10) 再(11) 是(12) 单(13) 纯(14) 的(15) 展(16) 示(17) 窗(18) 口(19)，而(20) 是(21) 企(22) 业(23) 的(24) 核(25) 心(26) 業(27) 力(28) 入(29) 口(30)。" So 30 characters.

Continue "于是，很多公司开始寻找能够一次性解决设计、研发、上线全流程的大型网站建设公司。" That's maybe 30-35. Let's approximate total maybe 150 characters so far. Need 150-250 per paragraph. So we need more.

Add more: "然而，规模不等于实力，名字不等于结果。" That's maybe 12 characters. Then "本文把‘比较大的网站建设公司’这个命题拆解成三大要点，帮助你在众多选手中快速锁定靠谱的伙伴，避免踩坑、浪费预算，最终交付出真正能驱动业务增长的平台。" That's long maybe 70 characters. So total maybe 150-180. That's okay but need 150-250 per paragraph, but can be slightly lower as long as overall total 1500. If each paragraph around 180, 7 paragraphs = 1260, not enough. Need 1500+. So each paragraph should be about 220-250 characters.

Thus we need to expand each paragraph to about 220 characters.

Let's rewrite paragraph 1 with more details.

Paragraph 1 expanded:

"网站已经不再是单纯的展示窗口，而是企业的核心业务入口。于是，很多公司开始寻找能够一次性解决设计、研发、上线全流程的大型网站建设公司。然而，规模不等于实力，名字不等于结果。本文把‘比较大的网站建设公司’这个命题拆解成三大要点，帮助你在众多选手中快速锁定靠谱的伙伴，避免踩坑、浪费预算，最终交付出真正能驱动业务增长的平台。实际上，很多企业在搜索时只关注公司的规模和案例数量，却忽略了项目执行中的细节和沟通效率，这些往往是决定成败的关键。"

Now count characters roughly: Let's count quickly.

"网站已经不再是单纯的展示窗口，而是企业的核心业务入口。" ~30

"于是，很多公司开始寻找能够一次性解决设计、研发、上线全流程的大型网站建设公司。" ~35 maybe 35

"然而，规模不等于实力，名字不等于结果。" ~12

"本文把‘比较大的网站建设公司’这个命题拆解成三大要点，帮助你在众多选手中快速锁定靠谱的伙伴，避免踩坑、浪费预算，最终交付出真正能驱动业务增长的平台。" ~70

"实际上，很多企业在搜索时只关注公司的规模和案例数量，却忽略了项目执行中的细节和沟通效率，这些往往是决定成败的关键。" ~50

Total maybe 200-210 characters. Good.

Paragraph 2: first key point: portfolio and case studies.

"第一要点，看真实案例和细致的作品集。大型网站建设公司往往会在官网展示众多成功项目，但光看数量并不够，关键在于项目的具体背景、功能实现和用户体验。比如，某电商平台在上线后三个月内，订单量提升了40%，页面加载速度提升了30%。这类细节数据，才是判断公司实力的硬证据。另外，注意案例背后的团队配置和技术选型，是否