name	type	capacity		head	suction head	motor power	voltage	rotating speed	size		weight	remark
		L/min	m³/h						inter	outler
self-suction water pump	vortex	13.3	0.8	18	7	370	220	2800	1"		9.6
		13.3	0.8	18	7	370	220	2800	1"		8.0	aluminlum casing base
		20	1.2	28	7	550	220	2800	1"		13.5