CE marking on this product?

I couldn't find one but not being used in Europe where the regulations are stricter. Being used in USA. Perhaps you could e mail the company.

Will this work with an agm battery

Yeeeesssss, it will... it will even work with a 12v car battery... but AGM wil last longer.

do i need to solder a diode so battery will not be drain threw solar panel during night

No. There's no need to. Power flows from the panels to the battery, not from the battery to the panels. That said, you could install the diode if you want to

What is the "continuous" amps output for 2 x 100w panels in parallel?

The nature of solar is you will not get a consistent continuous amperage. This system is best utilized to charge a battery or set of batteries. Then if you are drawing some power, you are still getting a steady amount of power. By basic math, one would get about 16.6 amps at 12 volts in the best sun conditions. On a spring day in sunny Quartzsite, Arizona, I did get close to this output with the panels leaned against the side of the trailer and manually oriented to face the sun every couple of hours. This charged my single RV battery from half charged to full in a couple hours of direct sun. The controller worked to maintain the charge with less than direct sunlight at the end of the day (perhaps 10-12 amps) while running some low amperage accessories.

Manufacturer	ECO-WORTHY
Item model number	L02M100N-LCWMZ-2
Product Dimensions	100 x 57 x 9.4 cm; 14.33 kg
ASIN	B09RZZHHHM

環境に優しい200ワット 12ボルト/24ボルトソーラーパネルキット 高効率単結晶ソーラーパネルと20A/30A PWM充電コントローラー付き RV、キャンピングカー、車両、キャラバン、その他のオフグリッドアプリケーション用

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環境に優しい200ワット 12ボルト/24ボルトソーラーパネルキット高効率単結晶ソーラーパネルと20A/30A PWM充電コントローラー付き RV、キャンピングカー、車両、キャラバン、その他のオフグリッドアプリケーション用