这里可以自定义设置
◆ Fan force exhaust system
◆ Intelligent constant temperature control system
◆ Heat efficiency over 88%
◆ Energy saving combustion technology
◆ Low water pressure start-up
◆ Slim design
◆ LED display
◆ Over-heating protection
◆ Anti-dry burning protection
◆ Flameout protection
◆ Anti-freezing protection (optional)
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